Fix CPU compile (#4781)

paddle/framework/executor_test.cc

@@ -317,7 +317,6 @@ TEST_F(ExecutorTesterFeedAndFetch, GPU) {
     }
   }
 }
-#endif
 
 DECLARE_double(fraction_of_gpu_memory_to_use);
 
@@ -326,4 +325,6 @@ int main(int argc, char** argv) {
   // Use less GPU memory for unittest.
   FLAGS_fraction_of_gpu_memory_to_use = 0.25;
   return RUN_ALL_TESTS();
-}
\ No newline at end of file
+}
+
+#endif
\ No newline at end of file