kvserver: rm unclassified engine from testContext

Epic: none
Release note: none

Author: pav-kv

pkg/kv/kvserver/replica_test.go

@@ -151,7 +151,6 @@ type testContext struct {
 	repl        *Replica
 	rangeID     roachpb.RangeID
 	gossip      *gossip.Gossip
-	engine      storage.Engine // TODO(sep-raft-log): remove this
 	stateEng    storage.Engine
 	raftEng     storage.Engine
 	manualClock *timeutil.ManualTime
@@ -193,7 +192,6 @@ func (tc *testContext) StartWithStoreConfigAndVersion(
 	tc.TB = t
 	require.Nil(t, tc.gossip)
 	require.Nil(t, tc.transport)
-	require.Nil(t, tc.engine)
 	require.Nil(t, tc.stateEng)
 	require.Nil(t, tc.raftEng)
 	require.Nil(t, tc.store)
@@ -226,9 +224,6 @@ func (tc *testContext) StartWithStoreConfigAndVersion(
 	tc.rangeID = repl.RangeID
 	tc.gossip = store.cfg.Gossip
 	tc.transport = store.cfg.Transport
-	// TODO(sep-raft-log): may need to update our various test harnesses to
-	// support two engines, do metamorphic stuff, etc.
-	tc.engine = store.TODOEngine()
 	tc.stateEng = store.StateEngine()
 	tc.raftEng = store.LogEngine()
 	tc.store = store