remove redundant QT statements

the top-level file already adds core-private and gui-private

Change-Id: Ic3e3a9c5683cc43f5e7a1075efbd7ce7c2f41e1a
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

src/platformsupport/fontdatabases/basic/basic.pri

 DEFINES += QT_NO_FONTCONFIG
-QT += gui-private core-private
 
 HEADERS += \
         $$PWD/qbasicfontdatabase_p.h \

src/platformsupport/jniconvenience/jniconvenience.pri

 android:!android-no-sdk {
-    QT += gui-private
-
     HEADERS += $$PWD/qjnihelpers_p.h \
                $$PWD/qjniobject_p.h