Remove Android's patch dependency

Author: Bret Ambrose

android-build/patches/zlib/CMakeLists.patch

@@ -27,7 +27,7 @@ if(BUILD_CURL OR BUILD_OPENSSL OR BUILD_ZLIB)
             SOURCE_DIR ${ZLIB_SOURCE_DIR}
             URL http://zlib.net/zlib-1.2.8.tar.gz
             URL_HASH "SHA256=36658cb768a54c1d4dec43c3116c27ed893e88b02ecfcb44f2166f9c0b7f2a0d"
-            PATCH_COMMAND patch CMakeLists.txt < ${CMAKE_SOURCE_DIR}/android-build/patches/zlib/CMakeLists.patch
+            PATCH_COMMAND ""
             CMAKE_ARGS
             -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE}
             -DANDROID_NATIVE_API_LEVEL=${ANDROID_NATIVE_API_LEVEL}