Draft: [RFC] autodel: remove deprecated module

The autodel module does not work anymore in 4.0 since we now pass native timestamps to vlc_frame dts/pts.

The motivation behind this module is explained in the commit that introduced it (83a3429c):

New autodel module to work-around a memory leak in the TS mux which is triggered when the input PCR packets disappear from the stream without disappearing from the PMT (happens on the satellite when the video suddenly gets scrambled). Insert it in the sout pipeline : --sout="#autodel:std{...}".

With the introduction of SetPCR in stream outputs, the demuxer PCR value passed to muxers should be enough to fix the bug above.