public Builder removeResponse(String statusCodeRegex) {
            responses.remove(statusCodeRegex);
            return this;
        }
Removes a response by status code regex.

@param statusCodeRegex Status code regular expression to remove.
@return Returns the builder.
smithy-aws-apigateway-traits/src/main/java/software/amazon/smithy/aws/apigateway/traits/MockIntegrationTrait.java