Remove unwanted stdio symbols from android-17

Bug: http://b/26268835
Change-Id: Ib6f3cec9fe036a4dc0397769883493f0f24e5d38

ndk/platforms/android-17/arch-arm/symbols/libc.so.functions.txt

@@ -122,23 +122,14 @@ __restore_core_regs
 __rt_sigaction
 __rt_sigprocmask
 __rt_sigtimedwait
-__sclose
 __set_tls
-__sflags
-__sflush
-__sfp
-__sinit
-__smakebuf
-__sread
 __srefill
 __srget
-__sseek
 __stack_chk_fail
 __statfs64
 __subdf3
 __subsf3
 __swbuf
-__swrite
 __swsetup
 __sym_ntop
 __sym_ntos
@@ -161,7 +152,6 @@ __unordsf2
 __wait4
 __waitid
 _exit
-_fwalk
 _getlong
 _getshort
 _longjmp

ndk/platforms/android-17/arch-mips/symbols/libc.so.functions.txt

@@ -91,21 +91,12 @@ __res_send_setrhook
 __rt_sigaction
 __rt_sigprocmask
 __rt_sigtimedwait
-__sclose
 __set_tls
-__sflags
-__sflush
-__sfp
-__sinit
-__smakebuf
-__sread
 __srefill
 __srget
-__sseek
 __stack_chk_fail
 __statfs64
 __swbuf
-__swrite
 __swsetup
 __sym_ntop
 __sym_ntos
@@ -124,7 +115,6 @@ __wait4
 __waitid
 _exit
 _flush_cache
-_fwalk
 _getlong
 _getshort
 _longjmp

ndk/platforms/android-17/arch-x86/symbols/libc.so.functions.txt

@@ -93,21 +93,12 @@ __res_send_setrhook
 __rt_sigaction
 __rt_sigprocmask
 __rt_sigtimedwait
-__sclose
 __set_thread_area
-__sflags
-__sflush
-__sfp
-__sinit
-__smakebuf
-__sread
 __srefill
 __srget
-__sseek
 __stack_chk_fail
 __statfs64
 __swbuf
-__swrite
 __swsetup
 __sym_ntop
 __sym_ntos
@@ -127,7 +118,6 @@ __umoddi3
 __wait4
 __waitid
 _exit
-_fwalk
 _getlong
 _getshort
 _longjmp