Remove pushqueue/popqueue, not compatible with bash3

Scripts/bashlib

@@ -465,44 +465,6 @@ readwhile() {
 
 
 
-#  ___________________________________________________________________________
-# |__ pushqueue ______________________________________________________________|
-#
-#       pushqueue element ...
-#
-# Pushes the given arguments as elements onto the queue.
-#
-pushqueue() {
-    [[ $_queue ]] || {
-        coproc _queue {
-            while IFS= read -r -d ''; do
-                printf '%s\0' "$REPLY"
-            done
-        }
-    }
-
-    printf '%s\0' "$@" >&"${_queue[1]}"
-} # _____________________________________________________________________
-
-
-
-#  __________________________________________________________________________
-# |__ popqueue ______________________________________________________________|
-#
-#       popqueue
-#
-# Pops one element off the queue.
-# If no elements are available on the queue, this command fails with exit code 1.
-#
-popqueue() {
-    local REPLY
-    [[ $_queue ]] && read -t0 <&"${_queue[0]}" || return
-    IFS= read -r -d '' <&"${_queue[0]}"
-    printf %s "$REPLY"
-} # _____________________________________________________________________
-
-
-
 #  ______________________________________________________________________
 # |__ Latest ____________________________________________________________|
 #