utils: Use g_uri_unescape_string to parse URI
A URI may contain many different escaped strings than just %20 (ie, space). So Let’t use the standard g_uri_unescape_string to unscape the URI string, and remove the no longer used function.
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A URI may contain many different escaped strings than just %20 (ie, space). So Let’t use the standard g_uri_unescape_string to unscape the URI string, and remove the no longer used function.