commented out Editor::SetRepresentations()

* This sets the default key representations on every SCI_SETDOCPOINTER
  which is very inefficient considering the way that SciTECO uses the
  Q-Register view.
  Furthermore it meant, we had to reset the representations to their
  SciTECO versions again after every SCI_SETDOCPOINTER.
* This patch only does not cause problems because we initialize
  the representations anyway for every Scintilla view.
  This patch is not meant to be upstreamed!

src/Editor.cxx

@@ -213,6 +213,7 @@ void Editor::Finalise() {
 }
 
 void Editor::SetRepresentations() {
+#if 0
 	reprs.Clear();
 
 	// C0 control set
@@ -257,6 +258,7 @@ void Editor::SetRepresentations() {
 			}
 		}
 	}
+#endif
 }
 
 void Editor::DropGraphics() noexcept {