remove duplicate __call__() in RadialVector
remove duplicate __call__() in RadialVector

BubuLK/sfepy,vlukes/sfepy,RexFuzzle/sfepy,sfepy/sfepy,BubuLK/sfepy,rc/sfepy,RexFuzzle/sfepy,RexFuzzle/sfepy,vlukes/sfepy,RexFuzzle/sfepy,sfepy/sfepy,vlukes/sfepy,rc/sfepy,lokik/sfepy,sfepy/sfepy,lokik/sfepy,rc/sfepy,lokik/sfepy,BubuLK/sfepy,lokik/sfepy