Remove more duplicated tests

Tests were found in TestFunctionAA.xml, TestFunctionLA.xml
TestFunctionPA.xml TestFunctionPL.xml TestFunctionPP.xml
TestFunctionLLPrec.xml, TestRelatePP.xml

git-svn-id: http://svn.osgeo.org/geos/trunk@4010 5242fede-7e19-0410-aef8-94bd7d2200fb