Revert "experiment for testing gcloud completion"

This reverts commit 2b58cdfdeb.

src/_gcloud

@@ -1,64 +0,0 @@
-autoload -U +X bashcompinit && bashcompinit
-zmodload -i zsh/parameter
-if ! (( $+functions[compdef] )) ; then
-    autoload -U +X compinit && compinit
-fi
-
-_python_argcomplete() {
-    local prefix=
-    if [[ $COMP_LINE == 'gcloud '* ]]; then
-        if [[ $3 == ssh  && $2 == *@* ]] ;then
-            # handle ssh user@instance specially
-            prefix=${2%@*}@
-            COMP_LINE=${COMP_LINE%$2}"${2#*@}"
-        elif [[ $2 == *'='* ]] ; then
-            # handle --flag=value
-            prefix=${2%=*}'='
-            COMP_LINE=${COMP_LINE%$2}${2/'='/' '}
-        fi
-    fi
-    local IFS=''
-    COMPREPLY=( $(IFS="$IFS"                   COMP_LINE="$COMP_LINE"                   COMP_POINT="$COMP_POINT"                   _ARGCOMPLETE_COMP_WORDBREAKS="$COMP_WORDBREAKS"                   _ARGCOMPLETE=1                   "$1" 8>&1 9>&2 1>/dev/null 2>/dev/null) )
-    if [[ $? != 0 ]]; then
-        unset COMPREPLY
-        return
-    fi
-    # if one completion without a trailing space, add the space
-    if [[ ${#COMPREPLY[@]} == 1 && $COMPREPLY != *[=' '] ]]; then
-        COMPREPLY+=' '
-    fi
-    if [[ $prefix != '' ]]; then
-        typeset -i n
-        for ((n=0; n < ${#COMPREPLY[@]}; n++));do
-            COMPREPLY[$n]=$prefix${COMPREPLY[$n]}
-        done
-    fi
-}
-complete -o nospace -o default -F _python_argcomplete "gcloud"
-
-_completer() {
-    command=$1
-    name=$2
-    eval '[[ -n "$'"${name}"'_COMMANDS" ]] || '"${name}"'_COMMANDS="$('"${command}"')"'
-    set -- $COMP_LINE
-    shift
-    while [[ $1 == -* ]]; do
-          shift
-    done
-    [[ -n "$2" ]] && return
-    grep -q "${name}\s*$" <<< $COMP_LINE &&
-        eval 'COMPREPLY=($'"${name}"'_COMMANDS)' &&
-        return
-    [[ "$COMP_LINE" == *" " ]] && return
-    [[ -n "$1" ]] &&
-        eval 'COMPREPLY=($(echo "$'"${name}"'_COMMANDS" | grep ^'"$1"'))'
-}
-
-unset bq_COMMANDS
-_bq_completer() {
-    _completer "CLOUDSDK_COMPONENT_MANAGER_DISABLE_UPDATE_CHECK=1 bq help | grep '^[^ ][^ ]*  ' | sed 's/ .*//'" bq
-}
-
-complete -o default -F _bq_completer bq
-complete -o nospace -F _python_argcomplete gsutil
-