fixup! remove prodtest vendor headers

core/embed/vendorheader/T2B1/vendor_prodtest.json

@@ -1,17 +0,0 @@
-{
-    "header_len": 4608,
-    "text": "UNSAFE, FACTORY TEST ONLY",
-    "hw_model": null,
-    "expiry": 0,
-    "version": [0, 0],
-    "sig_m": 2,
-    "trust": {
-        "allow_run_with_secret": true,
-        "show_vendor_string": false,
-        "require_user_click": false,
-        "red_background": false,
-        "delay": 0
-    },
-    "pubkeys": [
-    ]
-}