Remove uses of the downloader's silent arg in DASH and HLS

This was originally done to prevent *all* aria2c logs unless on the last attempt, at which if it failed all attempts it would let aria2c log the error.

However, that's bad practice as aria2c may produce errors or warnings on say the 3rd attempt, and the 3rd attempt may have otherwise succeeded, with warnings or errors. It also generally shouldn't be necessary.

devine/core/manifests/dash.py

@@ -535,7 +535,6 @@ class DASH:
                     headers=headers_,
                     cookies=cookies,
                     proxy=proxy,
-                    silent=attempts != 5,
                     segmented=True
                 )
                 break

devine/core/manifests/hls.py

@@ -441,7 +441,6 @@ class HLS:
                     headers=headers_,
                     cookies=session.cookies,
                     proxy=proxy,
-                    silent=attempts != 5,
                     segmented=True
                 )
                 break