Remove unused result value.


git-svn-id: https://root.cern.ch/svn/root/trunk@48757 27541ba8-7e3a-0410-8455-c3a389f83636
Exclude TPgSQL*.h


git-svn-id: https://root.cern.ch/svn/root/trunk@48758 27541ba8-7e3a-0410-8455-c3a389f83636
Make header stand-alone.


git-svn-id: https://root.cern.ch/svn/root/trunk@48759 27541ba8-7e3a-0410-8455-c3a389f83636