SERVER-37711 Revert commits related to lock yielding for prepared transactions on step down

This change reverts the following commits:

* SERVER-35870 Allow stepdown to work with prepared transactions (f96903979ac329a760e7b6f1bb5d8695d3daf2a7)
* SERVER-36913 Add functionality to LockManager for repl state transitions with prepared transactions (e65ff57e108ed69c46cc0b0ccbdd675663de2469)
* SERVER-35870 Allow more than one thread to block Session checkout at a time (9406af079a894bae80fbbec4703b04974bf84476)
* SERVER-35870 Add functionality to prevent Session checkouts & wait for all Sessions to be checked in (c6d90316d6b694e12426274c713a4a078e004fc5)

1 files changed, 0 insertions, 13 deletions

diff --git a/src/mongo/db/concurrency/lock_state.h b/src/mongo/db/concurrency/lock_state.h
index fce45afc56c..4532e0e9830 100644
--- a/src/mongo/db/concurrency/lock_state.h
+++ b/src/mongo/db/concurrency/lock_state.h
@@ -189,21 +189,12 @@ public:
         const boost::optional<SingleThreadedLockStats> lockStatsBase) const final;
 
     virtual bool saveLockStateAndUnlock(LockSnapshot* stateOut);
-    virtual bool saveLockStateAndUnlockForPrepare(LockSnapshot* stateOut);
 
     virtual void restoreLockState(OperationContext* opCtx, const LockSnapshot& stateToRestore);
     virtual void restoreLockState(const LockSnapshot& stateToRestore) {
         restoreLockState(nullptr, stateToRestore);
     }
 
-    void restoreLockStateWithTemporaryGlobalResource(
-        OperationContext* opCtx,
-        const LockSnapshot& stateToRestore,
-        LockManager::TemporaryResourceQueue* tempGlobalResource) override;
-
-    void replaceGlobalLockStateWithTemporaryGlobalResource(
-        LockManager::TemporaryResourceQueue* tempGlobalResource) override;
-
     virtual void releaseTicket();
     virtual void reacquireTicket(OperationContext* opCtx);
 
@@ -342,10 +333,6 @@ private:
     // If true, shared locks will participate in two-phase locking.
     bool _sharedLocksShouldTwoPhaseLock = false;
 
-    // When true it means we are in the process of saving/restoring locks for prepared transactions.
-    // Two-phase locking gets disabled in this mode to allow yielding locks from within a WUOW.
-    bool _prepareModeForLockYields = false;
-
     // If this is set, dictates the max number of milliseconds that we will wait for lock
     // acquisition. Effectively resets lock acquisition deadlines to time out sooner. If set to 0,
     // for example, lock attempts will time out immediately if the lock is not immediately