diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/sync/service/SyncService.kt b/app/src/main/java/eu/kanade/tachiyomi/data/sync/service/SyncService.kt
index 222c8a979..bfa6b51c5 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/sync/service/SyncService.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/sync/service/SyncService.kt
@@ -33,17 +33,6 @@ abstract class SyncService(
         return finalSyncData.backup
     }
 
-    /**
-     * Decodes the given sync data string into a Backup object.
-     *
-     * @param data The sync data string to be decoded.
-     * @return The decoded Backup object.
-     */
-    protected fun decodeSyncBackup(data: String): Backup {
-        val syncData = json.decodeFromString(SyncData.serializer(), data)
-        return syncData.backup!!
-    }
-
     /**
      * For refreshing tokens and other possible operations before connecting to the remote storage
      */
@@ -81,9 +70,7 @@ abstract class SyncService(
 
         // Create the merged SData object
         return SyncData(
-            sync = localSyncData.sync, // always use the local sync info
             backup = mergedBackup,
-            device = localSyncData.device, // always use the local device info
         )
     }
 
diff --git a/core/src/main/java/tachiyomi/core/preference/PreferenceStore.kt b/core/src/main/java/tachiyomi/core/preference/PreferenceStore.kt
index 55ba9597f..5b0e9da9b 100644
--- a/core/src/main/java/tachiyomi/core/preference/PreferenceStore.kt
+++ b/core/src/main/java/tachiyomi/core/preference/PreferenceStore.kt
@@ -1,7 +1,5 @@
 package tachiyomi.core.preference
 
-import java.time.Instant
-
 interface PreferenceStore {
 
     fun getString(key: String, defaultValue: String = ""): Preference<String>
@@ -16,15 +14,6 @@ interface PreferenceStore {
 
     fun getStringSet(key: String, defaultValue: Set<String> = emptySet()): Preference<Set<String>>
 
-    fun getInstant(key: String, defaultValue: Instant = Instant.EPOCH): Preference<Instant> {
-        return getObject(
-            key = key,
-            defaultValue = defaultValue,
-            serializer = { it.epochSecond.toString() },
-            deserializer = { Instant.ofEpochSecond(it.toLong()) },
-        )
-    }
-
     fun <T> getObject(
         key: String,
         defaultValue: T,