Remove the Dev-C++ project file. We're telling people in the forum since years...

Remove the Dev-C++ project file. We're telling people in the forum since years now that we don't support it whenever some unlucky soul tries still using it. 


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4708 dfc29bdd-3216-0410-991c-e03cc46cb475