-Wdeprecated-declarations: first deprecated in OS X 10.10

vcl/osx/salframeview.mm:201:16: warning: 'useOptimizedDrawing:' is deprecated: first deprecated in OS X 10.10 [-Wdeprecated-declarations]

Change-Id: I6025de6c23a73c625ddfe8398dfd91bd838fe83c
Reviewed-on: https://gerrit.libreoffice.org/10122
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>