Remove unused internal hooking code

src/libexec/saturnin-iam

 }
 
 
-#
-# hooks
-#
-
-run_hook() {
-    local name=$1
-    local cmd=$2
-    local arg=$3
-    inigrep -p iam.hooking.$name.$cmd \
-      | SATURNIN_IAM_CMD=$cmd \
-        SATURNIN_IAM_ARG=$arg \
-        bash
-}
-
-
 #
 # subcommand handlers
 #
 
 shift
 
-run_hook before $cmd $1
 i_am_$cmd $1
-run_hook after $cmd $1