[GITEA] DELETE /repos/{owner}/{repo}/pulls/{index}/reviews/{id}/comments/{comment}

* reuse deleteIssueComment by adding the commentType parameter
* ensure tests start with a PR with no random reviews from fixtures

Refs: https://codeberg.org/forgejo/forgejo/issues/2109
(cherry picked from commit 5b90ab77f6)
(cherry picked from commit 28ecd6f5a6)
(cherry picked from commit 24870cf133)

routers/api/v1/repo/pull_review.go

@@ -1014,6 +1014,53 @@ func UnDismissPullReview(ctx *context.APIContext) {
 	dismissReview(ctx, "", false, false)
 }
 
+// DeletePullReviewComment delete a pull review comment
+func DeletePullReviewComment(ctx *context.APIContext) {
+	// swagger:operation DELETE /repos/{owner}/{repo}/pulls/{index}/reviews/{id}/comments/{comment} repository repoDeletePullReviewComment
+	// ---
+	// summary: Delete a pull review comment
+	// produces:
+	// - application/json
+	// parameters:
+	// - name: owner
+	//   in: path
+	//   description: owner of the repo
+	//   type: string
+	//   required: true
+	// - name: repo
+	//   in: path
+	//   description: name of the repo
+	//   type: string
+	//   required: true
+	// - name: index
+	//   in: path
+	//   description: index of the pull request
+	//   type: integer
+	//   format: int64
+	//   required: true
+	// - name: id
+	//   in: path
+	//   description: id of the review
+	//   type: integer
+	//   format: int64
+	//   required: true
+	// - name: comment
+	//   in: path
+	//   description: id of the comment
+	//   type: integer
+	//   format: int64
+	//   required: true
+	// responses:
+	//   "204":
+	//     "$ref": "#/responses/empty"
+	//   "403":
+	//     "$ref": "#/responses/forbidden"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+
+	deleteIssueComment(ctx, issues_model.CommentTypeCode)
+}
+
 func dismissReview(ctx *context.APIContext, msg string, isDismiss, dismissPriors bool) {
 	if !ctx.Repo.IsAdmin() {
 		ctx.Error(http.StatusForbidden, "", "Must be repo admin")