Remove unnecessary external URL building for placeholder image (#450)

Author: AetherUnbound

OpenOversight/app/main/views.py

@@ -334,9 +334,7 @@ def officer_profile(officer_id: int):
             face_paths = [
                 (
                     None,
-                    url_for(
-                        "static", filename="images/placeholder.png", _external=True
-                    ),
+                    url_for("static", filename="images/placeholder.png"),
                 )
             ]
     except Exception:

OpenOversight/tests/routes/test_officer_and_department.py

@@ -146,9 +146,7 @@ def test_officer_appropriately_shows_placeholder(
 ):
     with current_app.test_request_context():
         officer = Officer.query.filter(filter_func(Officer.face.any())).first()
-        placeholder = url_for(
-            "static", filename="images/placeholder.png", _external=True
-        )
+        placeholder = url_for("static", filename="images/placeholder.png")
 
         rv = client.get(
             url_for("main.officer_profile", officer_id=officer.id),