Remove the unused layout config options

alsoftrc.sample

@@ -152,25 +152,6 @@
 #  compressor,distortion,echo,equalizer,flanger,modulator,dedicated
 #excludefx =
 
-## layout:
-#  Sets the virtual speaker layout. Values are specified in degrees, where 0 is
-#  straight in front, negative goes left, and positive goes right. Unspecified
-#  speakers will remain at their default positions (which are dependant on the
-#  output format). Available speakers are back-left(bl), side-left(sl), front-
-#  left(fl), front-center(fc), front-right(fr), side-right(sr), back-right(br),
-#  and back-center(bc).
-#layout =
-
-## layout_*:
-#  Channel-specific layouts may be specified to override the layout option. The
-#  same speakers as the layout option are available, and the default settings
-#  are shown below.
-#layout_stereo     = fl=-90, fr=90
-#layout_quad       = fl=-45, fr=45, bl=-135, br=135
-#layout_surround51 = fl=-30, fr=30, fc=0, bl=-110, br=110
-#layout_surround61 = fl=-30, fr=30, fc=0, sl=-90, sr=90, bc=180
-#layout_surround71 = fl=-30, fr=30, fc=0, sl=-90, sr=90, bl=-150, br=150
-
 ## default-reverb:
 #  A reverb preset that applies by default to all sources on send 0
 #  (applications that set their own slots on send 0 will override this).