blockservice: remove deprecated NewWriteThrough function

CHANGELOG.md

@@ -17,6 +17,7 @@ The following emojis are used to highlight certain changes:
 ### Added
 
 - `blockservice` now has `ContextWithSession` and `EmbedSessionInContext` functions, which allows to embed a session in a context. Future calls to `BlockGetter.GetBlock`, `BlockGetter.GetBlocks` and `NewSession` will use the session in the context.
+- `blockservice.NewWritethrough` deprecated function has been removed, instead you can do `blockservice.New(..., ..., WriteThrough())` like previously.
 
 ### Changed
 

blockservice/blockservice.go

@@ -119,14 +119,6 @@ func New(bs blockstore.Blockstore, exchange exchange.Interface, opts ...Option)
 	return service
 }
 
-// NewWriteThrough creates a BlockService that guarantees writes will go
-// through to the blockstore and are not skipped by cache checks.
-//
-// Deprecated: Use [New] with the [WriteThrough] option.
-func NewWriteThrough(bs blockstore.Blockstore, exchange exchange.Interface) BlockService {
-	return New(bs, exchange, WriteThrough())
-}
-
 // Blockstore returns the blockstore behind this blockservice.
 func (s *blockService) Blockstore() blockstore.Blockstore {
 	return s.blockstore