revert: commit f6da9d4e3c

"testcmdlineparser: comment out unused functions fileListStdin(), ignorepaths{1-4}(), ignorefilepaths{1,2}()"
instead suppress the files.
also suppress unused variable in test/testpreprocessor.cpp

.travis_suppressions

@@ -2,6 +2,8 @@ uselessAssignmentPtrArg:build/checkstl.cpp
 assertWithSideEffect:build/checkuninitvar.cpp
 duplicateBranch:build/checkunusedvar.cpp
 duplicateBranch:lib/checkunusedvar.cpp
+unusedPrivateFunction:test/testcmdlineparser.cpp
+unreadVariable:test/testpreprocessor.cpp
 *:gui/test*
 *:test/test.cxx
 

test/testcmdlineparser.cpp

@@ -925,7 +925,7 @@ private:
         ASSERT_EQUALS(false, parser.ParseFromArgs(2, argv));
         ASSERT_EQUALS(0, parser.GetIgnoredPaths().size());
     }
-    /*
+
     void ignorepaths1() {
         REDIRECT;
         const char *argv[] = {"cppcheck", "-isrc", "file.cpp"};
@@ -981,7 +981,7 @@ private:
         ASSERT_EQUALS(1, parser.GetIgnoredPaths().size());
         ASSERT_EQUALS("src/foo.cpp", parser.GetIgnoredPaths()[0]);
     }
-    */
+
     void checkconfig() {
         REDIRECT;
         const char *argv[] = {"cppcheck", "--check-config", "file.cpp"};