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diff --git a/main/snappy/snappy-c.h b/main/snappy/snappy-c.h
deleted file mode 100644
index c6c2a860..00000000
--- a/main/snappy/snappy-c.h
+++ /dev/null
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-/*
- * Copyright 2011 Martin Gieseking <martin.gieseking@uos.de>.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Plain C interface (a wrapper around the C++ implementation).
- */
-
-#ifndef UTIL_SNAPPY_OPENSOURCE_SNAPPY_C_H_
-#define UTIL_SNAPPY_OPENSOURCE_SNAPPY_C_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stddef.h>
-
-/*
- * Return values; see the documentation for each function to know
- * what each can return.
- */
-typedef enum {
-  SNAPPY_OK = 0,
-  SNAPPY_INVALID_INPUT = 1,
-  SNAPPY_BUFFER_TOO_SMALL = 2
-} snappy_status;
-
-/*
- * Takes the data stored in "input[0..input_length-1]" and stores
- * it in the array pointed to by "compressed".
- *
- * <compressed_length> signals the space available in "compressed".
- * If it is not at least equal to "snappy_max_compressed_length(input_length)",
- * SNAPPY_BUFFER_TOO_SMALL is returned. After successful compression,
- * <compressed_length> contains the true length of the compressed output,
- * and SNAPPY_OK is returned.
- *
- * Example:
- *   size_t output_length = snappy_max_compressed_length(input_length);
- *   char* output = (char*)malloc(output_length);
- *   if (snappy_compress(input, input_length, output, &output_length)
- *       == SNAPPY_OK) {
- *     ... Process(output, output_length) ...
- *   }
- *   free(output);
- */
-snappy_status snappy_compress(const char* input,
-                              size_t input_length,
-                              char* compressed,
-                              size_t* compressed_length);
-
-/*
- * Given data in "compressed[0..compressed_length-1]" generated by
- * calling the snappy_compress routine, this routine stores
- * the uncompressed data to
- *   uncompressed[0..uncompressed_length-1].
- * Returns failure (a value not equal to SNAPPY_OK) if the message
- * is corrupted and could not be decrypted.
- *
- * <uncompressed_length> signals the space available in "uncompressed".
- * If it is not at least equal to the value returned by
- * snappy_uncompressed_length for this stream, SNAPPY_BUFFER_TOO_SMALL
- * is returned. After successful decompression, <uncompressed_length>
- * contains the true length of the decompressed output.
- *
- * Example:
- *   size_t output_length;
- *   if (snappy_uncompressed_length(input, input_length, &output_length)
- *       != SNAPPY_OK) {
- *     ... fail ...
- *   }
- *   char* output = (char*)malloc(output_length);
- *   if (snappy_uncompress(input, input_length, output, &output_length)
- *       == SNAPPY_OK) {
- *     ... Process(output, output_length) ...
- *   }
- *   free(output);
- */
-snappy_status snappy_uncompress(const char* compressed,
-                                size_t compressed_length,
-                                char* uncompressed,
-                                size_t* uncompressed_length);
-
-/*
- * Returns the maximal size of the compressed representation of
- * input data that is "source_length" bytes in length.
- */
-size_t snappy_max_compressed_length(size_t source_length);
-
-/*
- * REQUIRES: "compressed[]" was produced by snappy_compress()
- * Returns SNAPPY_OK and stores the length of the uncompressed data in
- * *result normally. Returns SNAPPY_INVALID_INPUT on parsing error.
- * This operation takes O(1) time.
- */
-snappy_status snappy_uncompressed_length(const char* compressed,
-                                         size_t compressed_length,
-                                         size_t* result);
-
-/*
- * Check if the contents of "compressed[]" can be uncompressed successfully.
- * Does not return the uncompressed data; if so, returns SNAPPY_OK,
- * or if not, returns SNAPPY_INVALID_INPUT.
- * Takes time proportional to compressed_length, but is usually at least a
- * factor of four faster than actual decompression.
- */
-snappy_status snappy_validate_compressed_buffer(const char* compressed,
-                                                size_t compressed_length);
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif
-
-#endif  /* UTIL_SNAPPY_OPENSOURCE_SNAPPY_C_H_ */