package/ci: temporarily disable running tests on iOS.

So the build doesn't fail every time. Will be enabled again once
mosra#176 is resolved.

package/ci/ios-simulator.sh

@@ -29,7 +29,9 @@ cmake .. \
     -DCORRADE_TESTSUITE_TARGET_XCTEST=ON \
     -G Xcode
 set -o pipefail && cmake --build . --config Release -j$XCODE_JOBS | xcbeautify
-CORRADE_TEST_COLOR=ON ctest -V -C Release
+
+# TODO enable again once https://github.com/mosra/corrade/pull/176 is resolved
+#CORRADE_TEST_COLOR=ON ctest -V -C Release
 
 # Test install, after running the tests as for them it shouldn't be needed
 set -o pipefail && cmake --build . --config Release --target install -j$XCODE_JOBS | xcbeautify