Revert "_build.sh: mac-gcc hack patch test 2"

This reverts commit 3f08d5e.

Author: vszakats

_build.sh

@@ -1277,16 +1277,16 @@ build_single_target() {
 
         # Unbreak Homebrew gcc builds by moving problematic SDK header overlay
         # directories/files out of the way:
-      #  find "${libgccdir}/include-fixed" | sort
-      #  patch_out='dispatch os AvailabilityInternal.h'
-      #  patch_out=''  # TESTING 1
-      #  patch_out+=' stdio.h'  # for Xcode 16 error: unknown type name 'FILE'
-      #  for f in ${patch_out}; do
-      #    if [ -r "${libgccdir}/include-fixed/${f}" ]; then
-      #      echo "! Zap gcc hack: '${libgccdir}/include-fixed/${f}'"
-      #      mv "${libgccdir}/include-fixed/${f}" "${libgccdir}/include-fixed/${f}-BAK"
-      #    fi
-      #  done
+        find "${libgccdir}/include-fixed" | sort
+        patch_out='dispatch os AvailabilityInternal.h'
+        patch_out=''  # TESTING 1
+        patch_out+=' stdio.h'  # for Xcode 16 error: unknown type name 'FILE'
+        for f in ${patch_out}; do
+          if [ -r "${libgccdir}/include-fixed/${f}" ]; then
+            echo "! Zap gcc hack: '${libgccdir}/include-fixed/${f}'"
+            mv "${libgccdir}/include-fixed/${f}" "${libgccdir}/include-fixed/${f}-BAK"
+          fi
+        done
       fi
     fi