Bump XCode version and remove macdeployqt fix

.travis.yml

@@ -5,15 +5,12 @@ branches:
 matrix:
   include:
   - os: osx
-    osx_image: xcode10.2
+    osx_image: xcode11.3
     before_install:
     - brew update
     - brew install qt5
     - brew link qt5 --force
     before_deploy:
-    - git clone https://github.com/iltommi/macdeployqtfix.git
-    - python macdeployqtfix/macdeployqtfix.py neuronify.app/Contents/MacOS/neuronify
-      /usr/local
     - macdeployqt neuronify.app -qmldir=. -dmg
     install:
     - qmake