app_macro: Remove deprecated module.

For most modules that interacted with app_macro, this change is limited
to no longer looking for the current context from the macrocontext when
set.  Additionally, the following modules are impacted:

app_dial - no longer supports M^ connected/redirecting macro
app_minivm - samples written using macro will no longer work.
The sample needs a re-write

app_queue - can no longer a macro on the called party's channel.
Use gosub which is currently supported

ccss - no callback macro, gosub only

app_voicemail - no macro support

channel  - remove macrocontext and priority, no connected line or
redirection macro options
options - stdexten is deprecated to gosub as the default and only
pbx - removed macrolock
pbx_dundi - no longer look for macro

snmp - removed macro context, exten, and priority

ASTERISK-30304

Change-Id: I830daab293117179b8d61bd4df0d971a1b3d07f6

configs/samples/extensions.ael.sample

@@ -175,18 +175,6 @@ context ael-dundi-e164-lookup {
 	//
 };
 
-//
-// DUNDi can also be implemented as a Macro instead of using
-// the Local channel driver.
-//
-macro ael-dundi-e164(exten) {
-//
-// ARG1 is the extension to Dial
-//
-	goto ${exten}|1;
-	return;
-};
-
 //
 // Here are the entries you need to participate in the IAXTEL
 // call routing system.  Most IAXTEL numbers begin with 1-700, but
@@ -313,22 +301,6 @@ context ael-local {
 // eswitch => IAX2/context@${CURSERVER}
 
 
-macro ael-std-exten-ael( ext , dev ) {
-        Dial(${dev}/${ext},20);
-        switch(${DIALSTATUS}) {
-        case BUSY:
-                Voicemail(${ext},b);
-                break;
-        default:
-                Voicemail(${ext},u);
-        };
-        catch a {
-                VoiceMailMain(${ext});
-                return;
-        };
-	return;
-};
-
 context ael-demo {
 	s => {
 		Wait(1);