Remove daemon envHash and envInfo

Summary: Ref T7053. Remove the `envHash` and `envInfo` fields, which are no longer used now that the daemons restart automagically. Depends on D14458.

Test Plan: Saw no more setup issues.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: tycho.tatitscheff, epriestley

Maniphest Tasks: T7053

Differential Revision: https://secure.phabricator.com/D14446

resources/sql/autopatches/20151110.daemonenvhash.sql

@@ -0,0 +1,5 @@
+ALTER TABLE {$NAMESPACE}_daemon.daemon_log
+  DROP COLUMN envHash;
+
+ALTER TABLE {$NAMESPACE}_daemon.daemon_log
+  DROP COLUMN envInfo;