Revert "Use specialized method to calculate perspective projection matrix when given FOV"
Revert "Use specialized method to calculate perspective projection matrix when given FOV"

This reverts commit 5ce0740f98a0a851450143ea74f006d41e3b5ee8.

dazerdude/SharpDX,mrvux/SharpDX,mrvux/SharpDX,waltdestler/SharpDX,mrvux/SharpDX,sharpdx/SharpDX,andrewst/SharpDX,dazerdude/SharpDX,dazerdude/SharpDX,sharpdx/SharpDX,andrewst/SharpDX,sharpdx/SharpDX,waltdestler/SharpDX,waltdestler/SharpDX,andrewst/SharpDX,dazerdude/SharpDX,waltdestler/SharpDX