Remove plaintext_highlights config option

The code using it was removed in v0.11.0, so it hasn't actually worked
for a while now.

mautrix_telegram/config.py

@@ -125,7 +125,6 @@ class Config(BaseBridgeConfig):
         copy("bridge.max_telegram_delete")
         copy("bridge.sync_matrix_state")
         copy("bridge.allow_matrix_login")
-        copy("bridge.plaintext_highlights")
         copy("bridge.public_portals")
         copy("bridge.sync_with_custom_puppets")
         copy("bridge.sync_direct_chat_list")

mautrix_telegram/db/puppet.py

@@ -90,11 +90,6 @@ class Puppet:
         q = f"SELECT {cls.columns} FROM puppet WHERE lower(username)=$1"
         return cls._from_row(await cls.db.fetchrow(q, username.lower()))
 
-    @classmethod
-    async def find_by_displayname(cls, displayname: str) -> Puppet | None:
-        q = f"SELECT {cls.columns} FROM puppet WHERE displayname=$1"
-        return cls._from_row(await cls.db.fetchrow(q, displayname))
-
     @property
     def _values(self):
         return (

mautrix_telegram/example-config.yaml

@@ -178,10 +178,6 @@ bridge:
     # Allow logging in within Matrix. If false, users can only log in using login-qr or the
     # out-of-Matrix login website (see appservice.public config section)
     allow_matrix_login: true
-    # Whether or not to bridge plaintext highlights.
-    # Only enable this if your displayname_template has some static part that the bridge can use to
-    # reliably identify what is a plaintext highlight.
-    plaintext_highlights: false
     # Whether or not to make portals of publicly joinable channels/supergroups publicly joinable on Matrix.
     public_portals: true
     # Whether or not to use /sync to get presence, read receipts and typing notifications

mautrix_telegram/puppet.py

@@ -512,23 +512,4 @@ class Puppet(DBPuppet, BasePuppet):
 
         return None
 
-    @classmethod
-    async def find_by_displayname(cls, displayname: str) -> Puppet | None:
-        if not displayname:
-            return None
-
-        for _, puppet in cls.by_tgid.items():
-            if puppet.displayname and puppet.displayname == displayname:
-                return puppet
-
-        puppet = cast(cls, await super().find_by_displayname(displayname))
-        if puppet:
-            try:
-                return cls.by_tgid[puppet.tgid]
-            except KeyError:
-                puppet._add_to_cache()
-                return puppet
-
-        return None
-
     # endregion