Keep only base/extractor.[cc|h].

third_party/lzma/v4_65/files/C/Archive/7z/7zExtract.h

Index: third_party/lzma/v4_65/files/C/Archive/7z/7zExtract.h
diff --git a/third_party/lzma/v4_65/files/C/Archive/7z/7zExtract.h b/third_party/lzma/v4_65/files/C/Archive/7z/7zExtract.h
deleted file mode 100644
index 5f78415f1b6ca52951a0215a9c05b4df36950b04..0000000000000000000000000000000000000000
--- a/third_party/lzma/v4_65/files/C/Archive/7z/7zExtract.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/* 7zExtract.h -- Extracting from 7z archive
-2008-11-23 : Igor Pavlov : Public domain */
-
-#ifndef __7Z_EXTRACT_H
-#define __7Z_EXTRACT_H
-
-#include "7zIn.h"
-
-/*
-  SzExtract extracts file from archive
-
-  *outBuffer must be 0 before first call for each new archive.
-
-  Extracting cache:
-    If you need to decompress more than one file, you can send
-    these values from previous call:
-      *blockIndex,
-      *outBuffer,
-      *outBufferSize
-    You can consider "*outBuffer" as cache of solid block. If your archive is solid,
-    it will increase decompression speed.
-  
-    If you use external function, you can declare these 3 cache variables
-    (blockIndex, outBuffer, outBufferSize) as static in that external function.
-    
-    Free *outBuffer and set *outBuffer to 0, if you want to flush cache.
-*/
-
-SRes SzAr_Extract(
-    const CSzArEx *db,
-    ILookInStream *inStream,
-    UInt32 fileIndex,         /* index of file */
-    UInt32 *blockIndex,       /* index of solid block */
-    Byte **outBuffer,         /* pointer to pointer to output buffer (allocated with allocMain) */
-    size_t *outBufferSize,    /* buffer size for output buffer */
-    size_t *offset,           /* offset of stream for required file in *outBuffer */
-    size_t *outSizeProcessed, /* size of file in *outBuffer */
-    ISzAlloc *allocMain,
-    ISzAlloc *allocTemp);
-
-#endif