remove dependencies from sync.profile

the CI obtains them from the qt5 super repo nowadays.

Change-Id: I080afda6eecd7af34d9cefd97dfd76913a636f62
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@qt.io>

sync.profile

 %modules = (
     "QtWinExtras" => "$basedir/src/winextras",
 );
-
-%dependencies = (
-    "qtbase" => "",
-    "qtdeclarative" => "",
-    "qtxmlpatterns" => "",
-);