Debugger: Remove unneeded qualifications

Mostly done using the following ruby script:
Dir.glob('**/*.cpp').each { |file|
  next if file =~ %r{src/shared/qbs|/qmljs/}
  s = File.read(file)
  s.scan(/^using namespace (.*);$/) {
    ns = $1
    t = s.gsub(/^(.*)\b#{ns}::((?!Const)[A-Z])/) { |m|
      before = $1
      char = $2
      if before =~ /"|\/\/|\\|using|SIGNAL|SLOT|Q_/
        m
      else
        before + char
      end
    }
    if t != s
      puts file
      File.open(file, 'w').write(t)
    end
  }
}

Change-Id: I1aa1a2b6ccbafeb1a8f3053fffa39b3f96992591
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/debugger/disassembleragent.cpp

@@ -337,7 +337,7 @@ void DisassemblerAgent::updateBreakpointMarkers()
         return;
 
     const DisassemblerLines contents = d->contentsAtCurrentLocation();
-    foreach (TextEditor::TextMark *marker, d->breakpointMarks)
+    foreach (TextMark *marker, d->breakpointMarks)
         d->document->removeMark(marker);
     qDeleteAll(d->breakpointMarks);
     d->breakpointMarks.clear();