Remove __LIBC_ABI_PUBLIC__.

We have much better control over visibility now, so we don't need to
pollute the headers with cruft.

Bug: http://b/24767418
Change-Id: I349f4c3bc30102477375ad9f80926e560c7c1d8b
diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index ffbce10..65b92a6 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -76,15 +76,13 @@
 
 __BIONIC_LEGACY_INLINE double atof(const char*);
 
-extern double strtod(const char*, char**) __LIBC_ABI_PUBLIC__;
-__BIONIC_LEGACY_INLINE float strtof(const char*, char**) __LIBC_ABI_PUBLIC__;
-extern long double strtold(const char*, char**) __LIBC_ABI_PUBLIC__ __INTRODUCED_IN(21);
+extern double strtod(const char*, char**);
+__BIONIC_LEGACY_INLINE float strtof(const char*, char**);
+extern long double strtold(const char*, char**) __INTRODUCED_IN(21);
 
-extern long double strtold_l(const char*, char**, locale_t) __LIBC_ABI_PUBLIC__ __INTRODUCED_IN(21);
-extern long long strtoll_l(const char*, char**, int, locale_t) __LIBC_ABI_PUBLIC__
-  __INTRODUCED_IN(21);
-extern unsigned long long strtoull_l(const char*, char**, int, locale_t) __LIBC_ABI_PUBLIC__
-  __INTRODUCED_IN(21);
+extern long double strtold_l(const char*, char**, locale_t) __INTRODUCED_IN(21);
+extern long long strtoll_l(const char*, char**, int, locale_t) __INTRODUCED_IN(21);
+extern unsigned long long strtoull_l(const char*, char**, int, locale_t) __INTRODUCED_IN(21);
 
 extern int atoi(const char*) __purefunc;
 extern long atol(const char*) __purefunc;