Disable no-warning-test which is compiled with -Werror option and whose only purpose is checking if compilation results in any warnings.

--- /src/Makefile.am
+++ /src/Makefile.am
@@ -750,7 +750,7 @@
 
 check_PROGRAMS = protoc protobuf-test protobuf-lazy-descriptor-test \
                  protobuf-lite-test test_plugin protobuf-lite-arena-test \
-                 no-warning-test $(GZCHECKPROGRAMS)
+                 $(GZCHECKPROGRAMS)
 protobuf_test_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la \
                       ../gmock/gtest/lib/libgtest.la              \
                       ../gmock/lib/libgmock.la                    \
@@ -931,4 +931,4 @@
 
 TESTS = protobuf-test protobuf-lazy-descriptor-test protobuf-lite-test \
         google/protobuf/compiler/zip_output_unittest.sh $(GZTESTS)     \
-        protobuf-lite-arena-test no-warning-test
+        protobuf-lite-arena-test