Remove unecessary unlink in create deriv uri; prevent warnings in unlink in delete
Related to #3514526
Are there any downsides to removing the unlink in createContextualizedDerivativePath()? The method name suggests that only a URI should be generated, with no side effects like deleting files. The unlink is already in the deleteDerivative() method, and that seems like the proper place for it.
Edited by Amit Asaravala