Removed trailing spaces in the most relevant files

Command used for the job:
egrep -rl ' $' --include *.c --include *.h --include  *.s --include  *.inc --include  *.txt *  | xargs sed -i 's/\s\+$//g'

Credits to Grant Murphy from Stack Overflow.

data/maps/BattleFrontier_Lounge2/scripts.inc

@@ -2,7 +2,7 @@ BattleFrontier_Lounge2_MapScripts::
 	.byte 0
 
 @ This NPC gives hints about a random facility or battle mode.
-@ For battle modes he gives generic advice 
+@ For battle modes he gives generic advice
 @ For facilities, depending on how far the player has progressed he will say either
 @    The name of the Frontier Brain there
 @    The type and description of the 3 pokemon they use in their silver battle