cue: remove TODO for TestExpr

This got fixed somewhere along the way while fixing another
test.

Issue #3060

Signed-off-by: Marcel van Lohuizen <mpvl@gmail.com>
Change-Id: Id1b8f94d0f88952e76acbf828cdadb0356475177
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1194105
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>

cue/types_test.go

@@ -3836,8 +3836,6 @@ func TestExpr(t *testing.T) {
 	}}
 	for _, tc := range testCases {
 		runMatrix(t, tc.input, func(t *testing.T, cfg *evalConfig) {
-			TODO_Sharing(t, cfg)
-
 			v := cfg.getValue(t, tc.input).Lookup("v")
 			got := exprStr(v)
 			if got != tc.want {