move exec_curl_request from functions to MatrixConnection

functions.php

@@ -10,42 +10,4 @@ function abort($msg="Unknown")
 	print("\n");
 	exit();
 }
-
-function exec_curl_request($handle)
-{
-	$response = curl_exec($handle);
-
-	if ($response === false) {
-		$errno = curl_errno($handle);
-		$error = curl_error($handle);
-		error_log("Curl returned error $errno: $error\n");
-		curl_close($handle);
-		return false;
-	}
-
-	$http_code = intval(curl_getinfo($handle, CURLINFO_HTTP_CODE));
-	curl_close($handle);
-
-	if ($http_code >= 500) {
-		// do not want to DDOS server if something goes wrong
-		sleep(10);
-		return false;
-	} else if ($http_code != 200) {
-		$response = json_decode($response, true);
-		error_log("Request has failed with error {$response['error']}\n");
-		if ($http_code == 401) {
-			throw new Exception('Invalid access token provided');
-		}
-		throw new Exception("Server responds: '" . $response['error'] . "'");
-	} else {
-		$response = json_decode($response, true);
-		if (isset($response["event_id"])) {
-			$response = true;
-		} else {
-			$response = false;
-		}
-	}
-
-	return $response;
-}
 ?>