PG-563: Update TAP testcases and output due to changes by DEV.

As part of this PR, also updated regression test cases that are related to
following JIRA issues as well.

PG-354	pg_stat_monitor: Remove pg_stat_monitor_settings view
Now we not using pg_stat_monitor_settings view, due to this change majority of
TAP testcase requried output changes.

PG-558: Create test case to verify the function names and count in PGSM.
Added additional output file for SQL test case.

PG-554:	Remove redundant expected output files from regression.
Removed unnecessary output files in TAP testcases where these were not needed.

regression/sql/guc.sql

@@ -1,13 +1,8 @@
 CREATE EXTENSION pg_stat_monitor;
 
-\x
-
 SELECT  name
         , setting
         , unit
-        , category
-        , short_desc
-        , extra_desc
         , context
         , vartype
         , source
@@ -16,16 +11,11 @@ SELECT  name
         , enumvals
         , boot_val
         , reset_val
-        , sourcefile
-        , sourceline
         , pending_restart 
 FROM    pg_settings
 WHERE   name     LIKE     'pg_stat_monitor.%'
-        AND name NOT LIKE 'pg_stat_monitor.pgsm_track_planning'
 ORDER
 BY      name
 COLLATE "C";
 
-\x
-
 DROP EXTENSION pg_stat_monitor;