Removed Thanos usage mentions.

Signed-off-by: NBartlomiej Plotka <bwplotka@gmail.com>

tsdb/compact.go

@@ -332,7 +332,6 @@ func splitByRange(ds []dirMeta, tr int64) [][]dirMeta {
 
 // CompactBlockMetas merges many block metas into one, combining it's source blocks together
 // and adjusting compaction level.
-// NOTE(bwplotka): Used by Thanos code.
 func CompactBlockMetas(uid ulid.ULID, blocks ...*BlockMeta) *BlockMeta {
 	res := &BlockMeta{
 		ULID:    uid,

tsdb/querier.go

@@ -769,7 +769,6 @@ func (m mergedStringIter) Err() error {
 }
 
 // DeletedIterator wraps chunk Iterator and makes sure any deleted metrics are not returned.
-// NOTE(bwplotka): Used by Thanos code.
 type DeletedIterator struct {
 	// Iter is an Iterator to be wrapped.
 	Iter chunkenc.Iterator