Revert "[#866] Use TTL for blobovnicza tree cache"

This reverts commit d9cbb16bd3.

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

pkg/local_object_storage/blobstor/blobovniczatree/cache.go

@@ -1,11 +1,10 @@
 package blobovniczatree
 
 import (
+	"fmt"
 	"sync"
-	"time"
 
 	utilSync "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/sync"
-	"github.com/hashicorp/golang-lru/v2/expirable"
 	"github.com/hashicorp/golang-lru/v2/simplelru"
 )
 
@@ -23,10 +22,14 @@ type dbCache struct {
 	dbManager *dbManager
 }
 
-func newDBCache(size int, ttl time.Duration, dbManager *dbManager) *dbCache {
-	cache := expirable.NewLRU(size, func(_ string, evictedDB *sharedDB) {
+func newDBCache(size int, dbManager *dbManager) *dbCache {
+	cache, err := simplelru.NewLRU(size, func(_ string, evictedDB *sharedDB) {
 		evictedDB.Close()
-	}, ttl)
+	})
+	if err != nil {
+		// occurs only if the size is not positive
+		panic(fmt.Errorf("could not create LRU cache of size %d: %w", size, err))
+	}
 	return &dbCache{
 		cacheGuard: &sync.RWMutex{},
 		cache:      cache,