IGNITE-13815 Remove ability to delete segments from the middle of WAL archive

modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/IgniteWriteAheadLogManager.java

@@ -146,15 +146,14 @@ public WALIterator replay(
     public void release(WALPointer start) throws IgniteCheckedException;
 
     /**
-     * Gives a hint to WAL manager to clear entries logged before the given pointer. Some entries before the
-     * the given pointer will be kept because there is a configurable WAL history size. Those entries may be used
-     * for partial partition rebalancing.
+     * Gives a hint to WAL manager to clear entries logged before the given pointer.
+     * If entries are needed for binary recovery, they will not be affected.
+     * Some entries may be reserved eg for historical rebalance and they also will not be affected.
      *
-     * @param low Pointer since which WAL will be truncated. If null, WAL will be truncated from the oldest segment.
-     * @param high Pointer for which it is safe to clear the log.
+     * @param high Upper border to which WAL segments will be deleted.
      * @return Number of deleted WAL segments.
      */
-    public int truncate(WALPointer low, WALPointer high);
+    public int truncate(@Nullable WALPointer high);
 
     /**
      * Notifies {@code this} about latest checkpoint pointer.

modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/checkpoint/CheckpointHistory.java

@@ -351,7 +351,7 @@ public List<CheckpointEntry> onCheckpointFinished(Checkpoint chp) {
         int deleted = 0;
 
         if (truncateWalOnCpFinish)
-            deleted += wal.truncate(null, firstCheckpointPointer());
+            deleted += wal.truncate(firstCheckpointPointer());
 
         chp.walFilesDeleted(deleted);