Remove ASTERISK_REGISTER_FILE.

ASTERISK_REGISTER_FILE no longer has any purpose so this commit removes
all traces of it.

Previously exported symbols removed:
* __ast_register_file
* __ast_unregister_file
* ast_complete_source_filename

This also removes the mtx_prof static variable that was declared when
MTX_PROFILE was enabled.  This variable was only used in lock.c so it
is now initialized in that file only.

ASTERISK-26480 #close

Change-Id: I1074af07d71f9e159c48ef36631aa432c86f9966

rest-api-templates/ari_model_validators.c.mustache

@@ -27,8 +27,6 @@
 
 #include "asterisk.h"
 
-ASTERISK_REGISTER_FILE()
-
 #include "asterisk/logger.h"
 #include "asterisk/module.h"
 #include "ari_model_validators.h"

rest-api-templates/ari_resource.c.mustache

@@ -26,8 +26,6 @@
 
 #include "asterisk.h"
 
-ASTERISK_REGISTER_FILE()
-
 #include "resource_{{c_name}}.h"
 
 {{#apis}}

rest-api-templates/res_ari_resource.c.mustache

@@ -45,8 +45,6 @@
 
 #include "asterisk.h"
 
-ASTERISK_REGISTER_FILE()
-
 #include "asterisk/app.h"
 #include "asterisk/module.h"
 #include "asterisk/stasis_app.h"