Revert of Reland "Integrate SIMD optimisations for zlib"

third_party/zlib/crc32.c

Index: third_party/zlib/crc32.c
diff --git a/third_party/zlib/crc32.c b/third_party/zlib/crc32.c
index 75f2290d83c23978afb645fe677871a8f4ba88db..91be372d224da6833c03bd24d7158ff622ece35f 100644
--- a/third_party/zlib/crc32.c
+++ b/third_party/zlib/crc32.c
@@ -26,8 +26,6 @@
 #  endif /* !DYNAMIC_CRC_TABLE */
 #endif /* MAKECRCH */
 
-#include "deflate.h"
-#include "x86.h"
 #include "zutil.h"      /* for STDC and FAR definitions */
 
 #define local static
@@ -442,28 +440,3 @@
 {
     return crc32_combine_(crc1, crc2, len2);
 }
-
-ZLIB_INTERNAL void crc_reset(deflate_state *const s)
-{
-    if (x86_cpu_enable_simd) {
-        crc_fold_init(s);
-        return;
-    }
-    s->strm->adler = crc32(0L, Z_NULL, 0);
-}
-
-ZLIB_INTERNAL void crc_finalize(deflate_state *const s)
-{
-    if (x86_cpu_enable_simd)
-        s->strm->adler = crc_fold_512to32(s);
-}
-
-ZLIB_INTERNAL void copy_with_crc(z_streamp strm, Bytef *dst, long size)
-{
-    if (x86_cpu_enable_simd) {
-        crc_fold_copy(strm->state, dst, strm->next_in, size);
-        return;
-    }
-    zmemcpy(dst, strm->next_in, size);
-    strm->adler = crc32(strm->adler, dst, size);
-}