tests/unit/CMakeLists.txt: Drop NO_DEFAULT_PATH for finding qmltestrunner
We can leave the PATHS
value as a hardcoded last-hope guess.
- I don't think there's any reason to ignore the
PATH
by default specifically for findingqmltestrunner
. - It makes it harder to find the tool on systems where the path isn't exactly
/usr/lib/*/qt5/bin/qmltestrunner
.