Settings file cleanup

files/settings-default.cfg

@@ -12,20 +12,11 @@ screen = 0
 # Minimize the window if it loses key focus?
 minimize on focus loss = true
 
-# Valid values:
-# none
-# MSAA 2
-# MSAA 4
-# MSAA 8
-# MSAA 16
-antialiasing = none
+# Valid values: 0 for no antialiasing, or any power of two
+antialiasing = 0
 
 vsync = false
 
-# opengl render to texture mode, valid options:
-# PBuffer, FBO, Copy
-opengl rtt mode = FBO
-
 gamma = 1.00
 contrast = 1.00
 
@@ -54,9 +45,6 @@ texture filtering =
 
 anisotropy = 4
 
-# Number of texture mipmaps to generate
-num mipmaps = 8
-
 screenshot format = png
 
 [Shadows]