Don't setup ccache - check on osx

gitlab/functions.sh

@@ -194,10 +194,10 @@ prepare_build_env() {
       ln -sf ${use_ccache} ${ccache_bin}/cc
       ln -sf ${use_ccache} ${ccache_bin}/c++
     fi
-    PATH=${ccache_bin}:${PATH}
-    export_env PATH
-    log_info "ccache installed at ${use_ccache}, caching compilations..."
     use_gcc=`which gcc`
+    #PATH=${ccache_bin}:${PATH}
+    #export_env PATH
+    #log_info "ccache installed at ${use_ccache}, caching compilations..."
     log_info "gcc installed at ${use_gcc}..."
   fi
 }