Remove redundant interface (#24)

cache.go

@@ -658,55 +658,3 @@ func (s *Sharded[K, V]) StartCleaner(interval time.Duration) error {
 func (s *Sharded[K, V]) StopCleaner() {
 	s.cleaner.stop()
 }
-
-// Imcache is the interface that wraps cache operations.
-type Imcache[K comparable, V any] interface {
-	// Get returns the value for the given key.
-	Get(key K) (v V, present bool)
-	// Set sets the value for the given key.
-	// If the entry already exists, it is replaced.
-	//
-	// If you don't want to replace an existing entry, use the GetOrSet method instead.
-	// If you don't want to add a new entry if it doesn't exist, use the Replace method instead.
-	Set(key K, val V, exp Expiration)
-	// GetOrSet returns the value for the given key and true if it exists,
-	// otherwise it sets the value for the given key and returns the set value and false.
-	GetOrSet(key K, val V, exp Expiration) (v V, present bool)
-	// Replace replaces the value for the given key.
-	// It returns true if the value is present and replaced, otherwise it returns false.
-	//
-	// If you want to add or replace an entry, use the Set method instead.
-	Replace(key K, val V, exp Expiration) (present bool)
-	// ReplaceWithFunc replaces the value for the given key
-	// with the result of the given function that takes the old value as an argument.
-	// It returns true if the value is present and replaced, otherwise it returns false.
-	//
-	// If you want to replace the value with a new value not depending on the old value,
-	// use the Replace method instead.
-	ReplaceWithFunc(key K, f func(old V) (new V), exp Expiration) (present bool)
-	// Remove removes the cache entry for the given key.
-	//
-	// It returns true if the entry is present and removed,
-	// otherwise it returns false.
-	Remove(key K) (present bool)
-	// RemoveAll removes all entries.
-	RemoveAll()
-	// RemoveStale removes all expired entries.
-	RemoveStale()
-	// GetAll returns a copy of all entries in the cache.
-	GetAll() map[K]V
-	// Len returns the number of entries in the cache.
-	Len() int
-	// StartCleaner starts a cleaner that periodically removes expired entries.
-	// A cleaner runs in a separate goroutine.
-	// It's a NOP method if the cleaner is already running.
-	// It returns an error if the cleaner is already running
-	// or if the interval is less than or equal to zero.
-	//
-	// The cleaner can be stopped by calling StopCleaner method.
-	StartCleaner(interval time.Duration) error
-	// StopCleaner stops the cleaner.
-	// It is a blocking method that waits for the cleaner to stop.
-	// It's a NOP method if the cleaner is not running.
-	StopCleaner()
-}