Remove __sinit and __sdidinit.

We're eagerly initializing stdio now, so this can all be simplified.

Change-Id: Icb288f8dd0ee08f02bea0d23670f75e78bed6b99
diff --git a/libc/stdio/local.h b/libc/stdio/local.h
index 3ae7059..db3068d 100644
--- a/libc/stdio/local.h
+++ b/libc/stdio/local.h
@@ -153,10 +153,8 @@
 __LIBC32_LEGACY_PUBLIC__ int __swsetup(FILE*);
 
 /* These were referenced by a couple of different pieces of middleware and the Crystax NDK. */
-__LIBC32_LEGACY_PUBLIC__ extern int __sdidinit;
 __LIBC32_LEGACY_PUBLIC__ int __sflags(const char*, int*);
 __LIBC32_LEGACY_PUBLIC__ FILE* __sfp(void);
-__LIBC32_LEGACY_PUBLIC__ void __sinit(void);
 __LIBC32_LEGACY_PUBLIC__ void __smakebuf(FILE*);
 
 /* These are referenced by the Greed for Glory franchise. */
@@ -170,7 +168,6 @@
 #pragma GCC visibility push(hidden)
 
 int	__sflush_locked(FILE *);
-void	_cleanup(void);
 int	__swhatbuf(FILE *, size_t *, int *);
 wint_t __fgetwc_unlock(FILE *);
 wint_t	__ungetwc(wint_t, FILE *);
@@ -237,6 +234,10 @@
 extern int __sfvwrite(FILE *, struct __suio *);
 wint_t __fputwc_unlock(wchar_t wc, FILE *fp);
 
+/* Remove the if (!__sdidinit) __sinit() idiom from untouched upstream stdio code. */
+extern void __sinit(void); // Not actually implemented.
+#define __sdidinit 1
+
 #pragma GCC visibility pop
 
 __END_DECLS