Delete imports of removed packages

Author: gingerBill

examples/all/all_experimental.odin

@@ -1,8 +1,2 @@
 #+build windows
 package all
-
-import c_tokenizer    "core:c/frontend/tokenizer"
-import c_preprocessor "core:c/frontend/preprocessor"
-
-_ :: c_tokenizer
-_ :: c_preprocessor