ClangTools: Make space toggle the fixit state only

...instead of also going to the diagnostic location in the editor.

This allows to toggle desired fixits without loosing focus (analyzer
view -> editor widget).

Change-Id: Ie8a0379ee1e811c01a2f0666f3627e3a9b537b04
Reviewed-by: Ivan Donchevskii <ivan.donchevskii@qt.io>

src/plugins/clangtools/clangtoolsdiagnosticview.cpp

@@ -283,7 +283,6 @@ bool DiagnosticView::eventFilter(QObject *watched, QEvent *event)
         switch (key) {
         case Qt::Key_Return:
         case Qt::Key_Enter:
-        case Qt::Key_Space:
             openEditorForCurrentIndex();
         }
         return true;