Remove unused local variables and functions

src/fieldmap.c

@@ -28,7 +28,7 @@ EWRAM_DATA static u16 gBackupMapData[MAX_MAP_DATA_SIZE] = {0};
 EWRAM_DATA struct MapHeader gMapHeader = {0};
 EWRAM_DATA struct Camera gCamera = {0};
 EWRAM_DATA static struct ConnectionFlags gMapConnectionFlags = {0};
-EWRAM_DATA static u32 sFiller_02037344 = 0; // without this, the next file won't align properly
+EWRAM_DATA static u32 sFiller = 0; // without this, the next file won't align properly
 
 struct BackupMapLayout gBackupMapLayout;