[SPARC64]: Do not double-export sys_close() when CONFIG_SOLARIS_EMUL_MODULE

It is already exported by fs/open.c

Noticed by Ben Collins.
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/sparc64_ksyms.c

@@ -297,7 +297,6 @@ EXPORT_SYMBOL(svr4_getcontext);
 EXPORT_SYMBOL(svr4_setcontext);
 EXPORT_SYMBOL(compat_sys_ioctl);
 EXPORT_SYMBOL(sparc32_open);
-EXPORT_SYMBOL(sys_close);
 #endif
 
 /* Special internal versions of library functions. */