vatrace: remove the delimiter of every elements dump
vatrace: remove the delimiter of every elements dump

Signed-off-by: Austin Yuan <f447c34e4ebcef84a81b40a8d4dbc448a14e5570@intel.com>
(cherry picked from commit 132f22ae9b42b4657361c87b5c7d5b14a26a52a9)

gbeauchesne/libva,zzhhui/libva,chenxianqin/vaapi-libva,gbeauchesne/libva,01org/libva-cros,01org/iotg-lin-gfx-libva,gbeauchesne/libva,zzhhui/libva,pma1/libva,chenxianqin/vaapi-libva,01org/iotg-lin-gfx-libva,pma1/libva,pma1/libva,01org/iotg-lin-gfx-libva,zzhhui/libva,01org/libva-cros,chenxianqin/vaapi-libva,01org/libva-cros