chore: cleanup patch code

adapter/provider/patch_android.go

@@ -14,23 +14,6 @@ type UpdatableProvider interface {
 	UpdatedAt() time.Time
 }
 
-func (pp *proxySetProvider) UpdatedAt() time.Time {
-	return pp.Fetcher.UpdatedAt
-}
-
-func (pp *proxySetProvider) Close() error {
-	pp.healthCheck.close()
-	pp.Fetcher.Destroy()
-
-	return nil
-}
-
-func (cp *compatibleProvider) Close() error {
-	cp.healthCheck.close()
-
-	return nil
-}
-
 func Suspend(s bool) {
 	suspended = s
 }