fix: remove naming series from bin, repost queue (#30497)

Removing naming series from:
1. Bin
2. Repost queue

These doctypes are not user facing and dont really need naming series.
Current implementation of naming makes stock transaction sequential if
these documents are to be created during submission.

erpnext/stock/doctype/bin/bin.json

@@ -1,6 +1,6 @@
 {
  "actions": [],
- "autoname": "MAT-BIN-.YYYY.-.#####",
+ "autoname": "hash",
  "creation": "2013-01-10 16:34:25",
  "doctype": "DocType",
  "engine": "InnoDB",
@@ -171,11 +171,11 @@
  "idx": 1,
  "in_create": 1,
  "links": [],
- "modified": "2022-01-30 17:04:54.715288",
+ "modified": "2022-03-30 07:22:23.868602",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Bin",
- "naming_rule": "Expression (old style)",
+ "naming_rule": "Random",
  "owner": "Administrator",
  "permissions": [
   {

erpnext/stock/doctype/repost_item_valuation/repost_item_valuation.json

@@ -1,6 +1,6 @@
 {
  "actions": [],
- "autoname": "REPOST-ITEM-VAL-.######",
+ "autoname": "hash",
  "creation": "2022-01-11 15:03:38.273179",
  "doctype": "DocType",
  "editable_grid": 1,
@@ -177,11 +177,11 @@
  "index_web_pages_for_search": 1,
  "is_submittable": 1,
  "links": [],
- "modified": "2022-01-18 10:57:33.450907",
+ "modified": "2022-03-30 07:22:48.520266",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Repost Item Valuation",
- "naming_rule": "Expression (old style)",
+ "naming_rule": "Random",
  "owner": "Administrator",
  "permissions": [
   {