liblog: disable property tag tests

Disable:
liblog_global_state.is_loggable_both_set
liblog_global_state.is_loggable_tag_log_priority_only

Bug: 162633089
Bug: 162669552
Test: these tests don't run
Change-Id: I82b8e6685a321ae03374e86ffbe845608aec93b5
diff --git a/liblog/tests/liblog_global_state.cpp b/liblog/tests/liblog_global_state.cpp
index 3508818..756a859 100644
--- a/liblog/tests/liblog_global_state.cpp
+++ b/liblog/tests/liblog_global_state.cpp
@@ -185,6 +185,7 @@
   EXPECT_EQ(1, __android_log_is_loggable(ANDROID_LOG_WARN, LOG_TAG, ANDROID_LOG_INFO));
 }
 
+#ifdef LIBLOG_FLAKY_PROPERTY_TEST
 TEST(liblog_global_state, is_loggable_tag_log_priority_only) {
 #ifdef __ANDROID__
   EXPECT_EQ(0, __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG, ANDROID_LOG_INFO));
@@ -247,3 +248,4 @@
   GTEST_SKIP() << "No log tag properties on host";
 #endif
 }
+#endif