Revert "all: C++ compiler support"

This reverts commit 9a237c3e82.

vlib/builtin/sorted_map.v

@@ -31,10 +31,10 @@ pub mut:
 
 struct mapnode {
 mut:
-	children &voidptr
-	size     int
 	keys     [11]string  // TODO: Should use `max_size`
 	values   [11]voidptr // TODO: Should use `max_size`
+	children &voidptr
+	size     int
 }
 
 fn new_sorted_map(n, value_bytes int) SortedMap { // TODO: Remove `n`