add fulcrm_apiv2_make_url() function; trim pointless cURL code

fulcrm_apiv2.module

@@ -61,6 +61,15 @@ function fulcrm_apiv2_url_is_type( $url, $type ) {
         return false;
 }
 
+function fulcrm_apiv2_make_url( $type, $id = null ) {
+    $url = 'https://' . variable_get( 'fulcrm_apiv2_hostname', 'fulcrm.org' ) . '/api/v2/' . $type . '/';
+
+    if ( $id !== null )
+        $url .= $id . '/';
+
+    return $url;
+}
+
 function fulcrm_apiv2_http( $method, $object = null, $data = null, $query = null ) {
     $url = null;
 
@@ -104,7 +113,6 @@ function fulcrm_apiv2_http( $method, $object = null, $data = null, $query = null
             $request_headers[] = 'Content-Type: application/json';
         }
         curl_setopt( $curl, CURLOPT_POSTFIELDS, $data );
-        $request_headers[] = 'Content-Length: ' . strlen( $data );
     }
 
     $incoming_client_ids = &drupal_static( 'fulcrm_apiv2_prevent_loop' );