configure: remove check for empty $COMPATH
configure: remove check for empty $COMPATH

It would be extremely suprising if we could get to line 11075 in the
configure script if there isn't actually a C++ compiler available, and
the test does fail on Fedora 17 without ccache installed because $CC is
/bin/gcc.

Change-Id: I727ba171a3d647e2ba974d196794943b6450ce6e

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core