move intern() to mem.c

Being in lex.c was vestigial, since it was being used all over the
frontend and backend.

1 files changed, 0 insertions, 1 deletions

diff --git a/c/lex.h b/c/lex.h
index 89c9a7d..2782f67 100644
--- a/c/lex.h
+++ b/c/lex.h
@@ -111,7 +111,6 @@ enum initlexer {
    LXERR,
 };
 
-const char *intern(const char *);
 int lex(struct lexer *, struct token *);
 int lexpeek(struct lexer *, struct token *);
 enum typetag parsenumlit(uvlong *, double *, const struct token *, bool ispp);