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_normal.c

@@ -425,7 +425,7 @@ static void AnimCirclingSparkle(struct Sprite *sprite)
 #define tPalSelectorHi data[9]
 #define tPalSelectorLo data[10]
 
-// Blends mon/screen to designated color or back alternately tNumBlends times 
+// Blends mon/screen to designated color or back alternately tNumBlends times
 // Many uses of this task only set a tNumBlends of 2, which has the effect of blending to a color and back once
 void AnimTask_BlendColorCycle(u8 taskId)
 {
@@ -763,7 +763,7 @@ void UnusedAnimTask_8115F94(u8 taskId)
         paletteIndex = IndexOfSpritePaletteTag(gSprites[gHealthboxSpriteIds[attackerBattler]].template->paletteTag);
         selectedPalettes |= (1 << paletteIndex) << 16;
     }
-    
+
     if (gTasks[taskId].data[3] & 0x100)
         selectedPalettes |= (1 << attackerBattler) << 16;
 
@@ -956,7 +956,7 @@ static void AnimHitSplatHandleInvert(struct Sprite *sprite)
 {
     if (GetBattlerSide(gBattleAnimAttacker) != B_SIDE_PLAYER && !IsContest())
         gBattleAnimArgs[1] = -gBattleAnimArgs[1];
-    
+
     AnimHitSplatBasic(sprite);
 }