Comment, remove, or revise many unreferenced labels

data/phone/text/elm.asm

@@ -197,7 +197,6 @@ ElmPhoneGiftText:
 	para "See you later!"
 	done
 
-; unused
 ElmPhoneGotAholdOfSomethingNeatText:
 	text "Hello, <PLAY_G>?"
 	line "How's it going?"

data/phone/text/todd_overworld.asm

@@ -57,9 +57,8 @@ ToddRematchText:
 	line "my #MON better!"
 	done
 
-UnusedText_0xa43ca:
-; This is unused; Todd says this during the department store sale,
-; but this is a duplicate of the actual string in the Route 34 scripts.
+ToddSaleText: ; unreferenced
+; This is a duplicate of CamperToddSaleText in maps/Route34.asm.
 	text "Shopping under the"
 	line "sky!"