[vte] vte.sh: Remove the obsolete __vte_ps1 function

[Egmont Koblinger <egmontkob src gnome org>]

commit e7f5c4174a760c4270cc4b7962597d0b1ee38e4e
Author: Egmont Koblinger <egmont gmail com>
Date:   Fri Oct 25 10:34:05 2019 +0200

    vte.sh: Remove the obsolete __vte_ps1 function

 src/vte.sh | 6 ------
 1 file changed, 6 deletions(-)
---
diff --git a/src/vte.sh b/src/vte.sh
index c200493c..aff85f82 100644
--- a/src/vte.sh
+++ b/src/vte.sh
@@ -39,12 +39,6 @@ __vte_urlencode() (
   done
 )
 
-# Print a warning so that anyone who's added this manually to his PS1 can adapt.
-# The function will be removed in a later version.
-__vte_ps1() {
-  echo -n "(__vte_ps1 is obsolete)"
-}
-
 __vte_osc7 () {
   printf "\033]7;file://%s%s\033\\" "${HOSTNAME:-}" "$(__vte_urlencode "${PWD}")"
 }