test: removed unused test

Signed-off-by: Sam Alba <sam.alba@gmail.com>

tests/cli/input/scan/main.cue

@@ -1,50 +0,0 @@
-package main
-
-foo: string
-
-name:    string | *"world"
-message: "Hello, \(name)!"
-
-optional?: string
-
-missing: [string]: string
-
-bar: {
-	a:  string
-	#c: string
-	b:  int @dagger(computed)
-}
-
-// may be missing
-#inputs: {
-	hello:   string
-	missing: *"" | string
-}
-
-// substitute
-let A = string
-let B = bar.a
-
-//let Ba = bar.a
-//let Bb = bar.b
-let D = "hello"
-
-refd: {
-	a: string
-	b: {
-		ref1: a
-		ref2: A
-		aa:   B
-		bb:   D
-	}
-	#c: C: string
-}
-
-#fld1: string
-
-exec: {
-	cmd: string
-	#up: [{foo: string}]
-}
-
-list: [...string]