Remove non-functional part of ::Storage::DBI::Sybase::_ping

This code has existed in one form or another since about 322b7a6, and failed
multiple levels of review and later was left as-is due to a lack of a testing
rig :/

It seems that the simple change is sufficient, but more testing with more
obscure Sybase driver combinations is certainly needed

Changes

@@ -67,6 +67,7 @@ Revision history for DBIx::Class
         - Fix corner case of stringify-only overloaded objects being used in
           create()/populate()
         - Fix spurious warning on MSSQL cursor invalidation retries (RT#102166)
+        - Fix incorrect ::Storage->_ping() behavior under Sybase (RT#114214)
         - Fix several corner cases with Many2Many over custom relationships
         - Fix corner cases of C3 composition being broken on OLD_MRO (5.8.x)
           only: https://github.com/frioux/DBIx-Class-Helpers/issues/61

lib/DBIx/Class/Storage/DBI/Sybase.pm

@@ -76,27 +76,10 @@ sub _ping {
   local $dbh->{RaiseError} = 1;
   local $dbh->{PrintError} = 0;
 
-# FIXME if the main connection goes stale, does opening another for this statement
-# really determine anything?
-# FIXME (2) THIS MAKES 0 SENSE!!! Need to test later
-  if ($dbh->{syb_no_child_con}) {
-    return dbic_internal_try {
-      $self->_connect->do('select 1');
-      1;
-    }
-    catch {
-      0;
-    };
-  }
-
-  return (
-    (dbic_internal_try {
-      $dbh->do('select 1');
-      1;
-    })
-      ? 1
-      : 0
-  );
+  ( dbic_internal_try { $dbh->do('select 1'); 1 } )
+    ? 1
+    : 0
+  ;
 }
 
 sub _set_max_connect {