Revert MSC3861 introspection cache, admin impersonation and account lock (#16258)

1 files changed, 0 insertions, 22 deletions

diff --git a/synapse/util/caches/expiringcache.py b/synapse/util/caches/expiringcache.py
index 9a3e10ddee..01ad02af67 100644
--- a/synapse/util/caches/expiringcache.py
+++ b/synapse/util/caches/expiringcache.py
@@ -140,20 +140,6 @@ class ExpiringCache(Generic[KT, VT]):
 
         return value.value
 
-    def invalidate(self, key: KT) -> None:
-        """
-        Remove the given key from the cache.
-        """
-
-        value = self._cache.pop(key, None)
-        if value:
-            if self.iterable:
-                self.metrics.inc_evictions(
-                    EvictionReason.invalidation, len(value.value)
-                )
-            else:
-                self.metrics.inc_evictions(EvictionReason.invalidation)
-
     def __contains__(self, key: KT) -> bool:
         return key in self._cache
 
@@ -207,14 +193,6 @@ class ExpiringCache(Generic[KT, VT]):
             len(self),
         )
 
-    def invalidate_all(self) -> None:
-        """
-        Remove all items from the cache.
-        """
-        keys = set(self._cache.keys())
-        for key in keys:
-            self._cache.pop(key)
-
     def __len__(self) -> int:
         if self.iterable:
             return sum(len(entry.value) for entry in self._cache.values())