samples: Remove obsolete sample configs.

Removes a couple sample config files for modules
which have since been removed from Asterisk.

ASTERISK-30008 #close

Change-Id: I6be89cafc6c575d98a5315e4912b61a833aacf52

configs/samples/app_mysql.conf.sample

-; Configuration file for the MYSQL app addon
-
-[general]
-;
-; Nullvalue governs how NULL values are returned from the database.  In
-; previous versions, the special NULL value was returned as the "NULL"
-; string.  We now provide an option for the behavior, configured globally.
-; nullstring  - the string "NULL"
-; emptystring - the string ""
-; null        - unset the variable
-;
-; WARNING: setting nullvalue=null may have undesirable consequences, in
-; particular if you use subroutines in AEL or the LOCAL() variable construct.
-; You have been warned.  Don't complain if you use that setting in combination
-; with Gosub or AEL and get buggy behavior.
-;
-nullvalue = nullstring
-
-; If set, autoclear will destroy allocated statement and connection resources
-; when the channel ends.  For most usage of the MYSQL app, this is what you
-; want, but it's conceivable that somebody is sharing MYSQL connections across
-; multiple channels, in which case, this should be set to 'no'.  Defaults to
-; 'no', as this was the original behavior.
-autoclear=yes

configs/samples/muted.conf.sample

-#
-# Sample muted configuration file
-#
-# Copyright (C) 2004 Digium, Inc.
-#
-# First you have the host, username, and password
-# we use to connect to the asterisk system
-#
-# What is this? Well, haven't you ever wished you could automatically
-# turn down the volume on your stereo, CDPlayer, etc, when a call comes in,
-# and then return it to normal when the call ends? Well, this is a possible
-# mechanism to make this happen!
-# You have to fire up the new utils/muted, which runs as a daemon in the
-# background. This daemon connects to asterisk via a manager interface, and
-# also reads this config file from /etc/muted.conf. when the channels mentioned
-# are activated, it tweaks the sound levels on the sound card(s).
-# So, depending on the sound card, you may be able to run all your sound
-# generating devices thru your sound card, and use this mechanism to quiet
-# them down while you are on the phone. If anyone figures out how to make
-# this work with kids, please inform!!
-#
-host localhost
-user user
-pass pass
-#
-# List each channel we're supposed to watch
-#
-channel DAHDI/1
-channel DAHDI/2
-channel SIP/mark
-#
-# Mute level is the percentage of the current volume we should
-# lower the music to.
-#
-mutelevel 20
-#
-# Smooth fade makes the fadein/fadeout nicer sounding
-#
-smoothfade