fix: compile error, no more tooltip for mouse position

[djhunter67]

Problem

• Every morning I update my home Arch system at home and then my work Arch system; the Arch laptop on the weekends.
• For several weeks now, my updates fail with the following error (for every Arch computer):

src/controlbutton.cpp: In member function ‘virtual void controlButton::mouseMoveEvent(QMouseEvent*)’:
src/controlbutton.cpp:20:43: error: ‘class QMouseEvent’ has no member named ‘position’
   20 |   QToolTip::showText(this->mapToGlobal(e->position().toPoint()),
      |                                           ^~~~~~~~
make: *** [Makefile:736: controlbutton.o] Error 1

Solution

• Remove the tool-tip feature that requires the mouse position.
• Apparently the QmouseEvent dependency is broken. I have remove the offending line. BingWall now compiles.

[djhunter67]

This is the solution to issue #50 .