Revert "Expose more symbols temporarily"

This reverts commit 220f51e5669571aaae66a47a5f29866792359fd7.

The internal modules that were using extra symbols are all fixed.

Bug: 120266448
Test: m ndk_translation_all in cf_x86_phone
Change-Id: I561b16de1c320d2624e7cf8e6211e0c70edc823d
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index 9dfdbc0..c27f884 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1481,14 +1481,6 @@
 
     # Used by libandroid_runtime
     gMallocLeakZygoteChild; # apex
-
-    # TODO(b/120266448) hide these symbols again
-    # Used by libndk_translation
-    __getdents64; # arm x86 mips apex
-    tkill; # arm x86 mips apex
-    # Used by PtsBionicDeviceTestCases
-    __bionic_brk; # arm x86 mips apex
-    __system_property_add; # apex
 } LIBC_P;
 
 LIBC_PRIVATE {
@@ -1565,6 +1557,7 @@
     __arm_fadvise64_64; # arm
     __ashldi3; # arm
     __ashrdi3; # arm
+    __bionic_brk; # arm x86 mips
     __bionic_libgcc_compat_symbols; # arm x86
     __cmpdf2; # arm
     __divdf3; # arm
@@ -1590,6 +1583,7 @@
     __gedf2; # arm
     __get_thread; # arm x86 mips
     __get_tls; # arm x86 mips
+    __getdents64; # arm x86 mips
     __gnu_ldivmod_helper; # arm
     __gnu_uldivmod_helper; # arm
     __gnu_Unwind_Backtrace; # arm
@@ -1697,6 +1691,7 @@
     strntoumax; # arm x86 mips
     strtotimeval; # arm x86 mips
     sysv_signal; # arm x86 mips
+    tkill; # arm x86 mips
     wait3; # arm x86 mips
     wcswcs; # arm x86 mips
 } LIBC_Q;
@@ -1708,6 +1703,7 @@
 
 LIBC_PLATFORM {
   global:
+    __system_property_add;
     __system_property_area__; # var
     __system_property_area_init;
     __system_property_set_filename;