Restore bison cmake (#158)

* Update bison.cmake

* Delete project/patches/bison.patch

Author: Shinji-IkariG

project/externals/bison.cmake

@@ -13,7 +13,6 @@ ExternalProject_Add(
     STAMP_DIR ${BUILD_INFO_DIR}
     DOWNLOAD_DIR ${DOWNLOAD_DIR}
     SOURCE_DIR ${source_dir}
-    PATCH_COMMAND patch -p1 < ${CMAKE_SOURCE_DIR}/patches/${name}.patch
     CONFIGURE_COMMAND
         ${common_configure_envs}
         ./configure ${common_configure_args} --quiet