feat: add support for header search path deletion by string

Author: tdermendjiev

lib/pbxProject.js

@@ -933,7 +933,7 @@ pbxProject.prototype.removeFromHeaderSearchPaths = function (file) {
         INHERITED = '"$(inherited)"',
         SEARCH_PATHS = 'HEADER_SEARCH_PATHS',
         config, buildSettings, searchPaths;
-    var new_path = searchPathForFile(file, this);
+        var new_path = typeof file === 'string' ? file : searchPathForFile(file, this);
 
     for (config in configurations) {
         buildSettings = configurations[config].buildSettings;