Remove expr/stmt (#5857)

tests/macros/tstringinterp.nim

@@ -9,7 +9,7 @@ proc concat(strings: varargs[string]): string =
   result = newString(0)
   for s in items(strings): result.add(s)
 
-template processInterpolations(e: expr) =
+template processInterpolations(e) =
   var s = e[1].strVal
   for f in interpolatedFragments(s):
     case f.kind
@@ -17,7 +17,7 @@ template processInterpolations(e: expr) =
     of ikDollar:      addDollar()
     of ikVar, ikExpr: addExpr(newCall("$", parseExpr(f.value)))
 
-macro formatStyleInterpolation(e: expr): expr =
+macro formatStyleInterpolation(e: untyped): untyped =
   let e = callsite()
   var
     formatString = ""
@@ -41,7 +41,7 @@ macro formatStyleInterpolation(e: expr): expr =
   result[1].strVal = formatString
   result[2] = arrayNode
 
-macro concatStyleInterpolation(e: expr): expr =
+macro concatStyleInterpolation(e: untyped): untyped =
   let e = callsite()
   var args: seq[NimNode]
   newSeq(args, 0)
@@ -71,4 +71,3 @@ var
   s2 = formatStyleInterpolation"Hello ${bob}, ${sum(alice.len, bob.len, 2)}$$"
 
 write(stdout, s1 & " | " & s2)
-