remove unused sync strings

stepmania/Themes/default/Languages/de.ini

@@ -1277,8 +1277,6 @@ AutoSync Machine=AutoSync Maschine
 AutoSync Song=AutoSync Song
 Can't sync while playing a course.=Kann während eines laufenden Kurses nicht synchronisieren.
 Sync changes reverted.=Sync Veränderungen rückgängig gemacht.
-earlier=früher
-later=später
 
 [ScreenSystemLayer]
 CreditsCardChanged=KARTE GEWECHSELT

stepmania/Themes/default/Languages/en.ini

@@ -1254,8 +1254,6 @@ AutoSync Machine=AutoSync Machine
 AutoSync Song=AutoSync Song
 Can't sync while playing a course.=Can't sync while playing a course.
 Sync changes reverted.=Sync changes reverted.
-earlier=earlier
-later=later
 Revert sync changes=Revert sync changes
 Current BPM - smaller/larger=Current BPM - smaller/larger
 Song offset - notes earlier/later=Song offset - notes earlier/later

stepmania/Themes/default/Languages/es.ini

@@ -1276,8 +1276,6 @@ AutoSync Machine=Máquina Autosync
 AutoSync Song=Canción Autosync
 Can't sync while playing a course.=No pudo sincronizarlo mientras reproducía un course
 Sync changes reverted.=Revertidos los cambios sync
-earlier=Antes
-later=Después
 
 [ScreenSystemLayer]
 CreditsCardChanged=TARJETA CONECTADA

stepmania/Themes/default/Languages/fr.ini

@@ -1276,8 +1276,6 @@ AutoSync Machine=Console AutoSync.
 AutoSync Song=Chanson AutoSync.
 Can't sync while playing a course.=Sync. impossible pendant qu'un cours est joué.
 Sync changes reverted.=Chnagements sync. annulés.
-earlier=plus tôt
-later=plus tard
 
 [ScreenSystemLayer]
 CreditsCardChanged=CARTE ECHANGEE

stepmania/Themes/default/Languages/it.ini

@@ -1276,8 +1276,6 @@ AutoSync Machine=AutoSync Macchina
 AutoSync Song=AutoSync Canzone
 Can't sync while playing a course.=Impossibile sincronizzare durante un percorso
 Sync changes reverted.=Modifiche sync revertite
-earlier=prima
-later=dopo
 
 [ScreenSystemLayer]
 CreditsCardChanged=SCHEDA CAMBIATA