feat: graduate prebuilds to general availability (#18607)

This PR removes the prebuilds experiment and allows the use of prebuilds
without opting into an experiment.

coderd/telemetry/telemetry.go

@@ -687,10 +687,6 @@ func (r *remoteReporter) createSnapshot() (*Snapshot, error) {
 		return nil
 	})
 	eg.Go(func() error {
-		if !r.options.Experiments.Enabled(codersdk.ExperimentWorkspacePrebuilds) {
-			return nil
-		}
-
 		metrics, err := r.options.Database.GetPrebuildMetrics(ctx)
 		if err != nil {
 			return xerrors.Errorf("get prebuild metrics: %w", err)

coderd/telemetry/telemetry_test.go

@@ -408,7 +408,6 @@ func TestPrebuiltWorkspacesTelemetry(t *testing.T) {
 
 	cases := []struct {
 		name                    string
-		experimentEnabled       bool
 		storeFn                 func(store database.Store) database.Store
 		expectedSnapshotEntries int
 		expectedCreated         int
@@ -416,8 +415,7 @@ func TestPrebuiltWorkspacesTelemetry(t *testing.T) {
 		expectedClaimed         int
 	}{
 		{
-			name:              "experiment enabled",
-			experimentEnabled: true,
+			name: "prebuilds enabled",
 			storeFn: func(store database.Store) database.Store {
 				return &mockDB{Store: store}
 			},
@@ -427,19 +425,11 @@ func TestPrebuiltWorkspacesTelemetry(t *testing.T) {
 			expectedClaimed:         3,
 		},
 		{
-			name:              "experiment enabled, prebuilds not used",
-			experimentEnabled: true,
+			name: "prebuilds not used",
 			storeFn: func(store database.Store) database.Store {
 				return &emptyMockDB{Store: store}
 			},
 		},
-		{
-			name:              "experiment disabled",
-			experimentEnabled: false,
-			storeFn: func(store database.Store) database.Store {
-				return &mockDB{Store: store}
-			},
-		},
 	}
 
 	for _, tc := range cases {
@@ -448,11 +438,6 @@ func TestPrebuiltWorkspacesTelemetry(t *testing.T) {
 
 			deployment, snapshot := collectSnapshot(ctx, t, db, func(opts telemetry.Options) telemetry.Options {
 				opts.Database = tc.storeFn(db)
-				if tc.experimentEnabled {
-					opts.Experiments = codersdk.Experiments{
-						codersdk.ExperimentWorkspacePrebuilds,
-					}
-				}
 				return opts
 			})