fix: An invalid email has been provided for InfStones

Author: nikitastupin

program-list.json

@@ -9650,7 +9650,6 @@
       "program_name": "InfStones",
       "policy_url": "https://infstones.com/blog/education/introducing-the-blocguardians-bug-bounty-program-654e723bd9afaf003e44fdea",
       "contact_url": "https://infstones.com/blog/education/introducing-the-blocguardians-bug-bounty-program-654e723bd9afaf003e44fdea",
-      "contact_email": "",
       "offers_bounty": "yes",
       "offers_swag": false,
       "pgp_key": "",