Cleanup/ removed private function _get_root

Function _get_root() copied from acme.sh and is not needed here. Other cleanup as recommended by acme.sh test bot.

dnsapi/dns_miab.sh

@@ -1,14 +1,14 @@
 #!/usr/bin/env sh
 
-#Name: dns_miab.sh
+# Name: dns_miab.sh
 #
-#Authors:
+# Authors:
 #    Darven Dissek 2018
 #    William Gertz 2019
 #
 #     Thanks to Neil Pang for the code reused from acme.sh from HTTP-01 validation
 #     used to communicate with the MailintheBox Custom DNS API
-#Report Bugs here:
+# Report Bugs here:
 #    https://github.com/billgertz/MIAB_dns_api (for dns_miab.sh)
 #    https://github.com/Neilpang/acme.sh       (for acme.sh)
 #
@@ -61,7 +61,6 @@ dns_miab_add() {
     _err "$result"
     return 1
   fi
-
 }
 
 #Usage: fulldomain txtvalue
@@ -101,7 +100,7 @@ dns_miab_rm() {
   #Remove the challenge record
   result="$(_miab_post "$txtvalue" "$baseurl" "" "DELETE" "" "$MIAB_Username" "$MIAB_Password")"
 
-  _debug result $result
+  _debug result "$result"
 
   #check if result was good
   if _contains "$result" "updated DNS"; then
@@ -115,43 +114,7 @@ dns_miab_rm() {
 }
 
 ####################  Private functions below ##################################
-#_acme-challenge.www.domain.com
-#returns
-# _sub_domain=_acme-challenge.www
-# _domain=domain.com
-# _domain_id=sdjkglgdfewsdfg
-_get_root() {
-  domain=$1
-  i=2
-  p=1
- 
-  while true; do
-    h=$(printf "%s" "$domain" | cut -d . -f $i-100)
-    _debug h "$h"
-    if [ -z "$h" ]; then
-      #not valid
-      return 1
-    fi
-
-    if _contains "$response" "\"name\":\"$h\"" >/dev/null; then
-      _domain_id=$(printf "%s\n" "$response" | _egrep_o "\[.\"id\":\"[^\"]*\"" | head -n 1 | cut -d : -f 2 | tr -d \")
-
-      if [ "$_domain_id" ]; then
-        _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
-        _domain=$h
-        return 0
-      fi
-
-      return 1
-    fi
-
-    p=$i
-    i=$(_math "$i" + 1)
-  done
-
-  return 1
-}
-
+#
 # post changes to MIAB dns (taken from acme.sh)
 _miab_post() {
   body="$1"