assert: graduate assert.match and assert.doesNotMatch

Signed-off-by: James M Snell <[email protected]>

Author: jasnell

doc/api/assert.md

@@ -882,8 +882,6 @@ added:
 * `regexp` {RegExp}
 * `message` {string|Error}
 
-> Stability: 1 - Experimental
-
 Expects the `string` input not to match the regular expression.
 
 This feature is currently experimental and the name might change or it might be
@@ -1404,8 +1402,6 @@ added:
 * `regexp` {RegExp}
 * `message` {string|Error}
 
-> Stability: 1 - Experimental
-
 Expects the `string` input to match the regular expression.
 
 This feature is currently experimental and the name might change or it might be