[!304] Remove error

Merge branch 'bugfix/fix-tsc-for-debian' into 'master'

ref:extensions/dune-codegen There is a fallback implementation if dmesg cannot
be read

See merge request [extensions/dune-codegen!304]

  [extensions/dune-codegen!304]: gitlab.dune-project.org/extensions/dune-codegen/merge_requests/304

dune/codegen/common/tsc.cc

@@ -96,8 +96,8 @@ namespace Dune {
             if (waitpid(pid,&status,0) < 0)
               DUNE_THROW(TSCError,"Failed to clean up dmesg child process");
 
-            if (WEXITSTATUS(status) != 0)
-              DUNE_THROW(TSCError,"Child process failed with return status " << WEXITSTATUS(status));
+            // if (WEXITSTATUS(status) != 0)
+            //   DUNE_THROW(TSCError,"Child process failed with return status " << WEXITSTATUS(status));
 
             if (result < 0)
               DUNE_THROW(TSCNotInKernelLog,"Could not find TSC frequency information in kernel log");