Remove incomplete issue URL from comment

Agent-Logs-Url: https://github.com/microsoft/vscode-pull-request-github/sessions/c9502930-8af9-4e4b-b72f-ad7cdd228e8d

Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

Author: Copilot

src/view/reviewManager.ts

@@ -523,7 +523,6 @@ export class ReviewManager extends Disposable {
 			// different remote ref (e.g. a base branch like `origin/dev`) rather than its own remote
 			// counterpart. Looking up a PR by that upstream name would associate the local branch with
 			// an unrelated PR (often a stale closed one) whose head ref happens to be that base branch.
-			// See https://github.com/microsoft/vscode-pull-request-github/issues for context.
 			if (upstreamBranchName && branchToCheck.name && upstreamBranchName !== branchToCheck.name) {
 				Logger.debug(`Skipping GitHub PR lookup for branch ${branchToCheck.name}: upstream branch name '${upstreamBranchName}' differs from local branch name.`, this.id);
 				return undefined;