Remove double exception print

[Glutexo]

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Complete Description of Additions/Changes:

In case of a connection error, an exception description was printed on the standard output twice: once by the outer test_connection method and once by the inner _(legacy_)test_urls method. The legacy version tries multiple URLs and prints the exception description on each failure. Thus, removed the outer print that only duplicates the last caught exception.

Card IDs:

• CCT-724