Revert "Set admin to true until I can log in"

This reverts commit 237ba385e811ad7ebb8c2366955f72beeb45fe0f.

src/data_storage.py

@@ -76,7 +76,7 @@ def get_user_id_if_email_exists(email: str) -> int | None:
 
 def is_admin(user_id: int):
     # Replace with db data field later
-    return True
+    return user_id == 1
 
 
 def login_by_token(token: str):