Remove @load base/frameworks/dpd from tests

Now that it's loaded in bare mode, no need to load it explicitly.

The main thing that tests were relying on seems to be tracking of
c$service for conn.log baselines. Very few were actually checking
for dpd.log

testing/btest/scripts/base/frameworks/input/config/enum-set.zeek

@@ -8,7 +8,6 @@ DPD::ignore_violations Analyzer::ANALYZER_SYSLOG
 @TEST-END-FILE
 
 @load base/frameworks/config
-@load base/frameworks/dpd
 
 redef exit_only_after_terminate = T;
 redef InputConfig::empty_field = "EMPTY";