Merge pull request #2097 from citra-emu/fix-travis

Travis: Fix OS X build

.travis-deps.sh

@@ -28,7 +28,6 @@ if [ "$TRAVIS_OS_NAME" = "linux" -o -z "$TRAVIS_OS_NAME" ]; then
     fi
 
 elif [ "$TRAVIS_OS_NAME" = "osx" ]; then
-    brew update > /dev/null # silence the very verbose output
-    brew unlink cmake || true
+    brew update
     brew install cmake qt5 sdl2 dylibbundler
 fi