You can just grep out the ones you want.

my @cols = ...;
shift @cols;  # blindy throw away first column
@cols = grep( $_ !~ /(Bandwidth|MSTCPLoopback)$/ , @cols);  # exclude 
+ones ending with "Bandwidth" or "MSTCPLoopback"
[download]

re: your code, note that delete is for hashes .. if you wanted to modify your code, you would use the slice function, but grep is much more powerful and perl-ish.