Revert "adding entry for ignoring <solutionname>.sln.ide folder which contains visual studio 2015 solution specific cache data"

This reverts commit b07a0904e3c0714353f997b1dc6122b367dab648.
Merge pull request #1292 from taspeotis/master

Revert "adding entry for ignoring <solutionname>.sln.ide folder which contains visual studio 2015 solution specific cache data"