Simplify reporter interface

lib/metaltest.js

@@ -27,7 +27,6 @@ const metaltest = (title) => {
 
   runner.run = async (...reporters) => {
     notify(reporters, 'start', title)
-    notify(reporters, 'before')
 
     const tests = only.length ? only : suite
     for (const test of tests) {
@@ -46,11 +45,9 @@ const metaltest = (title) => {
     }
 
     for (const fn of after) await fn()
-    notify(reporters, 'after')
 
     const stats = { title, success, fail, total: success + fail, testSuccess, testFail }
     notify(reporters, 'end', stats)
-
     return stats
   }