remove unused file

paddle/go/pserver/partitioner.go

@@ -1,10 +0,0 @@
-package pserver
-
-type partitioner struct {
-	shardNum int
-}
-
-// partitioner partitions the parameters into shards.
-func newPartitioner(shardNum int) *partitioner {
-	return &partitioner{shardNum: shardNum}
-}