Back out f2d82771e7dd, arm64e on macOS is still in preview state.

Until arm64e on macOS is finalized, continue to build arm64 packages.

scripts/mkpkg

@@ -340,11 +340,9 @@ case "$osversion" in
 		# Build intel universal binaries for 10.6 and below
 		ARCH_FLAGS="-arch i386 -arch x86_64"
 		;;
-	    macos1[1-9]*)
-		# Build arm64e/x86_64 universal binaries for macOS 11 and up
-		# We originally used arm64 here but the correct ABI is arm64e.
-		# The arm64 arch will be removed in a future release.
-		ARCH_FLAGS="-arch arm64 -arch arm64e -arch x86_64"
+	    macos11*)
+		# Build arm64/x86_64 universal binaries for macOS 11
+		ARCH_FLAGS="-arch arm64 -arch x86_64"
 		;;
 	esac
 	if test "${osversion}" != "`$scriptdir/pp --probe`"; then