chore: remove migration_hash (#28263)

diff --git a/erpnext/crm/doctype/prospect/prospect.json b/erpnext/crm/doctype/prospect/prospect.json
index 0e872ac..c9554ba 100644
--- a/erpnext/crm/doctype/prospect/prospect.json
+++ b/erpnext/crm/doctype/prospect/prospect.json
@@ -165,7 +165,6 @@
  ],
  "index_web_pages_for_search": 1,
  "links": [],
- "migration_hash": "f39fb8f4e18a0e7fd391f0b4b52d8375",
  "modified": "2021-11-01 13:10:36.759249",
  "modified_by": "Administrator",
  "module": "CRM",