util/uri: Remove uri_string_unescape()

util/uri: Remove uri_string_unescape()

uri_string_unescape() basically does the same as the glib function
g_uri_unescape_segment(). So we can get rid of our implementation
completely by simply using the glib function instead.

Suggested-by: Stefan Weil <sw@weilnetz.de>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240123182247.432642-2-thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Thomas Huth <thuth@redhat.com>