Unused parameter error_template

[salvatorelaiso]

The parameter error_template seems like is unused.

This parameter, which is found in example/satosa/pyeudiw_backend.yaml is referenced only in the following code (not considering test files):

eudi-wallet-it-python/pyeudiw/satosa/html_template.py

Lines 36 to 39 in d2ab68d

	# TODO - for rendering custom errors
	# self.error_page = self.loader.get_template(
	# config["error_template"]
	# )

See also #154.

Outside the mentioned code (which is commented-out) there is no other use of this parameter.

[peppelinux]

please clean up the code and the html template about this error template