another vfmt2 fix

vlib/v/fmt/tests/string_interpolation_literal_keep.vv

@@ -8,8 +8,6 @@ fn main() {
 	c := 'a: $a b: $b i: $i'
 	d := 'a: ${a:5s} b: ${b:-5s} i: ${i:20d}'
 	println('a: $a $b xxx')
-	// QTODO
-	//eprintln('c: $c')
 	eprintln('c: $c .')
 	println(d)
 }