Fix-up type hints in tests/server.py. (#15084)

This file was being ignored by mypy, we remove that
and add the missing type hints & deal with any fallout.

1 files changed, 0 insertions, 2 deletions

diff --git a/mypy.ini b/mypy.ini

index ff6e04b12f..94562d0bce 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -31,8 +31,6 @@ exclude = (?x)
    |synapse/storage/databases/__init__.py
    |synapse/storage/databases/main/cache.py
    |synapse/storage/schema/
-
-   |tests/server.py
    )$
 
 [mypy-synapse.federation.transport.client]