5.1.0 defines datestamp but doesn't use it

[ElectricNroff]

cve-schema/schema/v5.0/CVE_JSON_5.1_schema.json

Lines 70 to 75 in 2aa608b

	"datestamp": {
	"description": "Date/time format based on RFC3339 and ISO ISO8601.",
	"type": "string",
	"format": "date",
	"pattern": "^((2000|2400|2800|(19|2[0-9](0[48]|[2468][048]|[13579][26])))-02-29)|(((19|2[0-9])[0-9]{2})-02-(0[1-9]|1[0-9]|2[0-8]))|(((19|2[0-9])[0-9]{2})-(0[13578]|10|12)-(0[1-9]|[12][0-9]|3[01]))|(((19|2[0-9])[0-9]{2})-(0[469]|11)-(0[1-9]|[12][0-9]|30))$"
	},

There is no other mention of datestamp in the schema.

[alilleybrinker]

@ElectricNroff is this still the case? If so, seems ripe for a PR to just remove it, since it's unused for any values in the schema. Wouldn't need an RFD.