bitbake: toaster: Remove old toaster config loading mechanism

This has been replaced using django's inbuilt loaddata.
Django command documented at:
https://docs.djangoproject.com/en/1.8/ref/django-admin/#django-admin-loaddata

(Bitbake rev: 3edd33aff2b9eef82090dc4f9b5461f901aec8be)

Signed-off-by: Michael Wood <michael.g.wood@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/bin/toaster

@@ -101,7 +101,6 @@ stop_system()
     fi
     webserverKillAll
     # unset exported variables
-    unset TOASTER_CONF
     unset TOASTER_DIR
     unset BITBAKE_UI
     unset BBBASEDIR
@@ -154,23 +153,9 @@ if [ -n "$TEMPLATECONF" ]; then
         if [ -d "$OEROOT/$TEMPLATECONF" ]; then
             TEMPLATECONF="$OEROOT/$TEMPLATECONF"
         fi
-        if [ ! -d "$TEMPLATECONF" ]; then
-            echo >&2 "Error: '$TEMPLATECONF' must be a directory containing toasterconf.json"
-            return 1
-        fi
     fi
 fi
 
-if [ "$TOASTER_CONF" = "" ]; then
-    TOASTER_CONF="$TEMPLATECONF/toasterconf.json"
-    export TOASTER_CONF=$(python3 -c "import os; print(os.path.realpath('$TOASTER_CONF'))")
-fi
-
-if [ ! -f $TOASTER_CONF ]; then
-    echo "$TOASTER_CONF configuration file not found. Set TOASTER_CONF to specify file or fix .templateconf"
-    return 1
-fi
-
 # this defines the dir toaster will use for
 # 1) clones of layers (in _toaster_clones )
 # 2) the build dir (in build)