Revert "[itabashi-don] Show correct acct for alternate domain"

This reverts commit d982352ce5.

app/src/main/java/com/keylesspalace/tusky/db/AccountEntity.kt

@@ -61,7 +61,7 @@ data class AccountEntity(@field:PrimaryKey(autoGenerate = true) var id: Long,
         get() = "$domain:$accountId"
 
     val fullName: String
-        get() = "@$username" + if (domain == "n-sr.org")  "@itabashi.0j0.jp" else  "@$domain"
+        get() = "@$username@$domain"
 
     override fun equals(other: Any?): Boolean {
         if (this === other) return true