Remove warning message in MAC GCC tool build

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1212 6f19259b-4bc3-4df7-8a09-765794883524

Tools/Source/TianoTools/CreateMtFile/build.xml

@@ -38,7 +38,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
         outfile="${BIN_DIR}/${ToolName}"
         outtype="executable"
         debug="false">
-
+      <compilerarg value="${ExtraArgus}" />
       <fileset dir="${basedir}/${ToolName}" 
         includes="${FileSet}" 
         defaultexcludes="TRUE"