Revert "vte.sh: Append to PROMPT_COMMAND rather than overwriting it"
Revert "vte.sh: Append to PROMPT_COMMAND rather than overwriting it"

This reverts commit 1e6e46f90a035a51b37576d059d6108ece1b4eaa.

Revert this patch since it'll cause __vte_prompt_command to be
twice in PROMPT_COMMAND with the default fedora /etc/bashrc for
non-login shells.

Conflicts:
	src/vte.sh

saitoha/vte-sixel,rvu95/vte,saitoha/vte-sixel,thestinger/vte-ng,rvu95/vte,thestinger/vte-ng,flaxandteal/gasket-vte,flaxandteal/gasket-vte,thestinger/vte-ng,flaxandteal/gasket-vte,rvu95/vte,rvu95/vte,flaxandteal/gasket-vte,saitoha/vte-sixel