remove router_middleware function (dead code) (#439)

* remove dead code

* update changelog

CHANGES.md

@@ -24,6 +24,7 @@
 * Make item geometry and bbox nullable in sqlalchemy backend. ([#398](https://github.com/stac-utils/stac-fastapi/pull/398))
 
 ### Removed
+* Remove the unused `router_middleware` function ([#439](https://github.com/stac-utils/stac-fastapi/pull/439))
 
 ### Fixed
 

stac_fastapi/api/stac_fastapi/api/middleware.py

@@ -2,38 +2,11 @@
 
 import re
 from http.client import HTTP_PORT, HTTPS_PORT
-from typing import Callable, List, Tuple
+from typing import List, Tuple
 
-from fastapi import APIRouter, FastAPI
-from starlette.middleware.base import BaseHTTPMiddleware
-from starlette.requests import Request
-from starlette.routing import Match
 from starlette.types import ASGIApp, Receive, Scope, Send
 
 
-def router_middleware(app: FastAPI, router: APIRouter):
-    """Add middleware to a specific router, assumes no router prefix."""
-
-    def deco(func: Callable) -> Callable:
-        async def _middleware(request: Request, call_next):
-            # Check if scopes match
-            matches = any(
-                [
-                    route.matches(request.scope)[0] == Match.FULL
-                    for route in router.routes
-                ]
-            )
-            if matches:  # Run the middleware if they do
-                return await func(request, call_next)
-            else:  # Otherwise skip the middleware
-                return await call_next(request)
-
-        app.add_middleware(BaseHTTPMiddleware, dispatch=_middleware)
-        return func
-
-    return deco
-
-
 class ProxyHeaderMiddleware:
     """
     Account for forwarding headers when deriving base URL.