libstore: remove Worker::removeGoal

we can use our newfound powers of Goal::work Is A Real Promise to remove
completed goals from continuation promises. apart from being much easier
to follow it's also a lot more efficient because we have the iterator to
the item we are trying to remove, skipping a linear search of the cache.

Change-Id: Ie0190d051c5f4b81304d98db478348b20c209df5

1 files changed, 0 insertions, 5 deletions

diff --git a/src/libstore/build/goal.hh b/src/libstore/build/goal.hh
index b524d3118..de1c92c85 100644
--- a/src/libstore/build/goal.hh
+++ b/src/libstore/build/goal.hh
@@ -82,11 +82,6 @@ struct Goal
      */
     std::string name;
 
-    struct WorkResult;
-
-    // for use by Worker and Goal only. will go away once work() is a promise.
-    kj::Own<kj::PromiseFulfiller<Result<WorkResult>>> notify;
-
 protected:
     AsyncSemaphore::Token slotToken;