Some improvements in travis.yml for macOS. Closes #6089.

.travis.yml

@@ -84,10 +84,6 @@ before_install:
       # Qt 5
       PATH=/opt/qt55/bin:${PATH}
     fi
-  - |
-    if [ "$TRAVIS_OS_NAME" = "osx" ]; then
-      qbtconf="$qbtconf --disable-qt-dbus" ;
-    fi
 
   # print settings
   - echo $lt_branch
@@ -176,7 +172,11 @@ script:
 after_success:
   - if [ "$gui" = true ]; then qbt_exe="qbittorrent" ; else qbt_exe="qbittorrent-nox" ; fi
   - if [ "$TRAVIS_OS_NAME" = "linux" ]; then cd "$qbt_path/bin" ; fi
-  - if [ "$TRAVIS_OS_NAME" = "osx" ]; then cd "$TRAVIS_BUILD_DIR/src/" && macdeployqt "$qbt_exe.app" && cd "$qbt_exe.app/Contents/MacOS" ; fi
+  - |
+    if [ "$TRAVIS_OS_NAME" = "osx" ]; then
+      macdeployqt "$TRAVIS_BUILD_DIR/src/$qbt_exe.app" ;
+      cd "$TRAVIS_BUILD_DIR/src/$qbt_exe.app/Contents/MacOS" ;
+    fi
   - ./$qbt_exe --version
 
 after_script: