remove obsolete DEPENDPATH assignments

qmake now adds CONFIG+=depend_includepath by default, making manual
DEPENDPATH setup unnecessary.

Change-Id: Ibe763804b4cd451f19bfdac660436772644bf285
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

src/xmlpatterns/common.pri

@@ -14,5 +14,3 @@ INCLUDEPATH += $$PWD/acceltree      \
                $$PWD/type           \
                $$PWD/utils
 
-DEPENDPATH += $$INCLUDEPATH
-