soup-message-io: don't watch for SoupSocket::disconnect
soup-message-io: don't watch for SoupSocket::disconnect

The IO code was explicitly handling the SoupSocket::disconnect signal,
but this is actually redundant; if the socket gets disconnected we'll
get either an error (if writing) or an eof (if reading), and the code
will do the right thing with that. Watching ::disconnected too just
results in processing the same error twice and having to be extra
careful to do it idempotently.

ahmedammar/platform_external_gst_libsoup,ahmedammar/platform_external_gst_libsoup,Distrotech/libsoup,fanc999/libsoup,fanc999/libsoup,fanc999/libsoup,fanc999/libsoup,Distrotech/libsoup,jwendell/libsoup,jwendell/libsoup,ahmedammar/platform_external_gst_libsoup,Distrotech/libsoup,jwendell/libsoup,Distrotech/libsoup,jwendell/libsoup,fanc999/libsoup,Distrotech/libsoup,jwendell/libsoup