Remove unnecessary ignore-directive for COptTasks.cpp.

With commit 61972775, we use a proper SQLSTATE for the errors that
needed this before.

src/test/regress/init_file

@@ -86,9 +86,6 @@ s/\s+\(entry db(.*)+\spid=\d+\)//
 m/\(SOMEFILE:SOMEFUNC\)/
 s/\(SOMEFILE:SOMEFUNC\)//
 
-m/\(COptTasks\.cpp:\d+\)/
-s/\(COptTasks\.cpp:\d+\)//
-
 m/\(cdbdisp\.c:\d+\)/
 s/\(cdbdisp\.c:\d+\)//
 

src/test/regress/optfunctional/expected/dml_functional_2.out

@@ -4162,7 +4162,7 @@ SELECT COUNT(*) FROM dml_heap_check_s;
 (1 row)
 
 INSERT INTO dml_heap_check_s values(default,1,'nn',1.0000);
-ERROR:  null value in column "a" violates not-null constraint (COptTasks.cpp:1628)
+ERROR:  null value in column "a" violates not-null constraint
 SELECT COUNT(*) FROM dml_heap_check_s;
  count 
 -------

src/test/regress/optfunctional/init_file

@@ -97,9 +97,6 @@ s/\s+\(entry db(.*)+\spid=\d+\)//
 m/\(SOMEFILE:SOMEFUNC\)/
 s/\(SOMEFILE:SOMEFUNC\)//
 
-m/\(COptTasks\.cpp:\d+\)/
-s/\(COptTasks\.cpp:\d+\)//
-
 m/\(cdbdisp\.c:\d+\)/
 s/\(cdbdisp\.c:\d+\)//