Remove custom allocator.

Author: carlossanlop

src/native/libs/System.IO.Compression.Native/CMakeLists.txt

@@ -14,12 +14,6 @@ set(NATIVECOMPRESSION_SOURCES
     pal_zlib.c
 )
 
-if (HOST_WIN32 OR CLR_CMAKE_TARGET_WIN32)
-    list(APPEND NATIVECOMPRESSION_SOURCES "zlib_allocator_win.c")
-else()
-    list(APPEND NATIVECOMPRESSION_SOURCES "zlib_allocator_unix.c")
-endif()
-
 if (NOT CLR_CMAKE_TARGET_BROWSER AND NOT CLR_CMAKE_TARGET_WASI)
 
     if (CLR_CMAKE_USE_SYSTEM_BROTLI)

src/native/libs/System.IO.Compression.Native/pal_zlib.c

@@ -11,7 +11,6 @@
 #else
     #include "pal_utilities.h"
 #endif
-#include <zlib_allocator.h>
 #include <zlib.h>
 
 c_static_assert(PAL_Z_NOFLUSH == Z_NO_FLUSH);
@@ -40,9 +39,6 @@ static int32_t Init(PAL_ZStream* stream)
 {
     z_stream* zStream = (z_stream*)calloc(1, sizeof(z_stream));
 
-    zStream->zalloc = z_custom_calloc;
-    zStream->zfree = z_custom_cfree;
-
     stream->internalState = zStream;
 
     if (zStream != NULL)