remove ci credential check

it turns out pull requests from trusted contributors do have access to secrets,
so we can't do that check. Checking for the repo only doesn't make much sense.

release/cibuild.py

@@ -86,21 +86,6 @@ class BuildEnviron:
 
         is_pull_request = os.environ.get("GITHUB_EVENT_NAME", "pull_request") == "pull_request"
 
-        is_untrusted = (
-                is_pull_request
-                or
-                os.environ.get("GITHUB_REPOSITORY", "other") != "mitmproxy/mitmproxy"
-        )
-        has_creds = any(
-            x in os.environ for x in
-            ["AWS_ACCESS_KEY_ID",
-             "TWINE_USERNAME", "TWINE_PASSWORD",
-             "DOCKER_USERNAME", "DOCKER_PASSWORD",
-             "CI_BUILD_KEY"]
-        )
-        if is_untrusted and has_creds:
-            raise RuntimeError("Found upload credentials even though we aren't running on CI!")
-
         return cls(
             system=platform.system(),
             root_dir=Path(__file__).parent.parent,