Remove deprecated LoggingContext.set_current_context/LoggingContext.current_context methods (#18989)

These were added for backwards compatibility (and essentially
deprecated) in matrix-org/synapse#7408
(2020-05-04) because
[`synapse-s3-storage-provider`](https://github.com/matrix-org/synapse-s3-storage-provider)
previously relied on them -- but `synapse-s3-storage-provider` since
been
[updated](matrix-org/synapse-s3-storage-provider#36)
to no longer use them.

Author: MadLittleMods

changelog.d/18989.removal

@@ -0,0 +1 @@
+Remove deprecated `LoggingContext.set_current_context`/`LoggingContext.current_context` methods which already have equivalent bare methods in `synapse.logging.context`.

synapse/logging/context.py

@@ -33,7 +33,6 @@
 import logging
 import threading
 import typing
-import warnings
 from types import TracebackType
 from typing import (
     TYPE_CHECKING,
@@ -378,47 +377,6 @@ def __init__(
     def __str__(self) -> str:
         return self.name
 
-    @classmethod
-    def current_context(cls) -> LoggingContextOrSentinel:
-        """Get the current logging context from thread local storage
-
-        This exists for backwards compatibility. ``current_context()`` should be
-        called directly.
-
-        Returns:
-            The current logging context
-        """
-        warnings.warn(
-            "synapse.logging.context.LoggingContext.current_context() is deprecated "
-            "in favor of synapse.logging.context.current_context().",
-            DeprecationWarning,
-            stacklevel=2,
-        )
-        return current_context()
-
-    @classmethod
-    def set_current_context(
-        cls, context: LoggingContextOrSentinel
-    ) -> LoggingContextOrSentinel:
-        """Set the current logging context in thread local storage
-
-        This exists for backwards compatibility. ``set_current_context()`` should be
-        called directly.
-
-        Args:
-            context: The context to activate.
-
-        Returns:
-            The context that was previously active
-        """
-        warnings.warn(
-            "synapse.logging.context.LoggingContext.set_current_context() is deprecated "
-            "in favor of synapse.logging.context.set_current_context().",
-            DeprecationWarning,
-            stacklevel=2,
-        )
-        return set_current_context(context)
-
     def __enter__(self) -> "LoggingContext":
         """Enters this logging context into thread local storage"""
         logcontext_debug_logger.debug("LoggingContext(%s).__enter__", self.name)