remove useless extern declarations

These variables already have extern linkage.

diff --git a/lib/sfio/sfextern.c b/lib/sfio/sfextern.c
index 976d349722db489a3e515ce0fee0198efef42e63..caa7d125d5ae1d8f03abbd002f9f15fef48900e5 100644 (file)
--- a/lib/sfio/sfextern.c
+++ b/lib/sfio/sfextern.c
@@ -55,11 +55,3 @@ Sfio_t _Sfstderr = SFNEW(NIL(char *), -1, 2,
 Sfio_t *sfstdin = &_Sfstdin;
 Sfio_t *sfstdout = &_Sfstdout;
 Sfio_t *sfstderr = &_Sfstderr;
-
-extern ssize_t _Sfi;
-extern Sfio_t _Sfstdin;
-extern Sfio_t _Sfstdout;
-extern Sfio_t _Sfstderr;
-extern Sfio_t *sfstdin;
-extern Sfio_t *sfstdout;
-extern Sfio_t *sfstderr;