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_tower.c

@@ -1339,7 +1339,7 @@ void PutNewBattleTowerRecord(struct EmeraldBattleTowerRecord *newRecordEm)
                 if (gSaveBlock2Ptr->frontier.towerRecords[i].name[j] != newRecord->name[j])
                     break;
                 if (newRecord->name[j] == EOS)
-                #endif  
+                #endif
                 {
                     k = PLAYER_NAME_LENGTH;
                     break;
@@ -2655,7 +2655,7 @@ static void TowerTryCloseLink(void)
 static void SetMultiPartnerGfx(void)
 {
     // 0xF below means use VAR_OBJ_GFX_ID_E
-    SetBattleFacilityTrainerGfxId(gSaveBlock2Ptr->frontier.trainerIds[17], 0xF); 
+    SetBattleFacilityTrainerGfxId(gSaveBlock2Ptr->frontier.trainerIds[17], 0xF);
 }
 
 static void SetTowerInterviewData(void)
@@ -2968,7 +2968,7 @@ static void FillPartnerParty(u16 trainerId)
                       sStevenMons[i].species,
                       sStevenMons[i].level,
                       sStevenMons[i].fixedIV,
-                      TRUE, 
+                      TRUE,
                       #ifdef BUGFIX
                       j,
                       #else