Removes the method at the specified path.
In order for this method to work, the node provider must be mutable.
If you did not specify a custom node provider, the created provider is mutable.
Source
void removeNode(String path) {
if (provider is! MutableNodeProvider) {
throw new Exception("Unable to Modify Node Provider: It is not mutable.");
}
(provider as MutableNodeProvider).removeNode(path);
}