remove use statements from main.rs that temporary replaced extern crate and fixed paths that previously used them

src/machine/compile.rs

@@ -1,4 +1,4 @@
-use crate::prolog_parser_rebis::clause_name;
+use prolog_parser_rebis::clause_name;
 
 use crate::codegen::*;
 use crate::debray_allocator::*;