Remove pstore related test case from CTS

This testcase was removed on O through change ID
Ie91625fd365b17dccdb179758639492da6b49787.

On O-MR1, this is added back.
Removing the testcase again from CTS.

Bug : 63913130

Change-Id: Icad99317805dedba6f55895b91d020477152fcfd
diff --git a/liblog/tests/Android.mk b/liblog/tests/Android.mk
index 39b52ac..1e41d90 100644
--- a/liblog/tests/Android.mk
+++ b/liblog/tests/Android.mk
@@ -55,7 +55,6 @@
     -fno-builtin \
 
 cts_src_files := \
-    libc_test.cpp \
     liblog_test_default.cpp \
     liblog_test_local.cpp \
     liblog_test_stderr.cpp \
@@ -68,6 +67,7 @@
     log_wrap_test.cpp
 
 test_src_files := \
+    libc_test.cpp \
     $(cts_src_files) \
 
 # Build tests for the device (with .so). Run with: