diff --git a/ndk/platforms/android-3/arch-arm/symbols/libthread_db.so.functions.txt b/ndk/platforms/android-3/arch-arm/symbols/libthread_db.so.functions.txt
deleted file mode 100644
index 473500dc8..000000000
--- a/ndk/platforms/android-3/arch-arm/symbols/libthread_db.so.functions.txt
+++ /dev/null
@@ -1,42 +0,0 @@
-_Unwind_Backtrace
-_Unwind_Complete
-_Unwind_DeleteException
-_Unwind_ForcedUnwind
-_Unwind_GetCFA
-_Unwind_GetDataRelBase
-_Unwind_GetLanguageSpecificData
-_Unwind_GetRegionStart
-_Unwind_GetTextRelBase
-_Unwind_RaiseException
-_Unwind_Resume
-_Unwind_Resume_or_Rethrow
-_Unwind_VRS_Get
-_Unwind_VRS_Pop
-_Unwind_VRS_Set
-___Unwind_Backtrace
-___Unwind_ForcedUnwind
-___Unwind_RaiseException
-___Unwind_Resume
-___Unwind_Resume_or_Rethrow
-__aeabi_unwind_cpp_pr0
-__aeabi_unwind_cpp_pr1
-__aeabi_unwind_cpp_pr2
-__gnu_Unwind_Backtrace
-__gnu_Unwind_ForcedUnwind
-__gnu_Unwind_RaiseException
-__gnu_Unwind_Restore_VFP
-__gnu_Unwind_Resume
-__gnu_Unwind_Resume_or_Rethrow
-__gnu_Unwind_Save_VFP
-__gnu_unwind_execute
-__gnu_unwind_frame
-__restore_core_regs
-restore_core_regs
-td_symbol_list
-td_ta_event_addr
-td_ta_event_getmsg
-td_ta_new
-td_ta_set_event
-td_ta_thr_iter
-td_thr_event_enable
-td_thr_get_info
diff --git a/ndk/platforms/android-3/arch-arm/symbols/libthread_db.so.variables.txt b/ndk/platforms/android-3/arch-arm/symbols/libthread_db.so.variables.txt
deleted file mode 100644
index 8b1378917..000000000
--- a/ndk/platforms/android-3/arch-arm/symbols/libthread_db.so.variables.txt
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/ndk/platforms/android-9/arch-mips/symbols/libthread_db.so.functions.txt b/ndk/platforms/android-9/arch-mips/symbols/libthread_db.so.functions.txt
deleted file mode 100644
index e31e4478e..000000000
--- a/ndk/platforms/android-9/arch-mips/symbols/libthread_db.so.functions.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-td_symbol_list
-td_ta_clear_event
-td_ta_delete
-td_ta_event_addr
-td_ta_event_getmsg
-td_ta_map_lwp2thr
-td_ta_new
-td_ta_set_event
-td_ta_thr_iter
-td_thr_event_enable
-td_thr_get_info
-td_thr_tls_get_addr
diff --git a/ndk/platforms/android-9/arch-mips/symbols/libthread_db.so.variables.txt b/ndk/platforms/android-9/arch-mips/symbols/libthread_db.so.variables.txt
deleted file mode 100644
index 8b1378917..000000000
--- a/ndk/platforms/android-9/arch-mips/symbols/libthread_db.so.variables.txt
+++ /dev/null
@@ -1 +0,0 @@
-