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.

src/bike.c

@@ -962,7 +962,7 @@ bool8 IsBikingDisallowedByPlayer(void)
 
 bool8 IsPlayerNotUsingAcroBikeOnBumpySlope(void)
 {
-    if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_ACRO_BIKE) 
+    if (TestPlayerAvatarFlags(PLAYER_AVATAR_FLAG_ACRO_BIKE)
         && MetatileBehavior_IsBumpySlope(gObjectEvents[gPlayerAvatar.objectEventId].currentMetatileBehavior))
         return FALSE;
     else