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/title_screen.c

@@ -751,7 +751,7 @@ static void Task_TitleScreenPhase3(u8 taskId)
         FadeOutBGM(4);
         BeginNormalPaletteFade(PALETTES_ALL, 0, 0, 0x10, RGB_BLACK);
         SetMainCallback2(CB2_GoToBerryFixScreen);
-    }   
+    }
     else
     {
         SetGpuReg(REG_OFFSET_BG2Y_L, 0);