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/battle_anim_effects_2.c

@@ -3464,7 +3464,7 @@ static void AnimOrbitScatter_Step(struct Sprite *sprite)
 {
     sprite->x2 += sprite->data[0];
     sprite->y2 += sprite->data[1];
-    if (sprite->x + sprite->x2 + 16 > ((u32)DISPLAY_WIDTH + 32) 
+    if (sprite->x + sprite->x2 + 16 > ((u32)DISPLAY_WIDTH + 32)
      || sprite->y + sprite->y2 > DISPLAY_HEIGHT || sprite->y + sprite->y2 < -16)
         DestroyAnimSprite(sprite);
 }