Issue Resolved 'Ship' Class "Memory Problems"

Turns out it wasn't a memory issue... Simply forgot to remove the line:
"System.Diagnostics.Debug.WriteLine(drawnPosYOffset);".
It seems that over 50 Visual Studio Debug Outputs at 60 times a second
can cause huge FPS drop.

Issue Thread: https://github.com/Frostbiteuk/LincolnRTS/issues/1

After removing I thoroughly tested by spawning ships for five minutes
and experienced no performance issues.