TextEditor: 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: Ief087658e2adc337ee02c49f0fb406597114df07
Reviewed-by: Christian Kandeler <christian.kandeler@theqtcompany.com>
Reviewed-by: hjk <hjk@theqtcompany.com>

src/plugins/texteditor/highlighterutils.cpp

@@ -70,7 +70,7 @@ void TextEditor::setMimeTypeForHighlighter(Highlighter *highlighter, const Core:
 
 SyntaxHighlighter *TextEditor::createGenericSyntaxHighlighter(const Core::MimeType &mimeType)
 {
-    TextEditor::Highlighter *highlighter = new TextEditor::Highlighter();
+    Highlighter *highlighter = new Highlighter();
     setMimeTypeForHighlighter(highlighter, mimeType);
     return highlighter;
 }