fix(jni): don't specify log dir since we don't really need the log files (#906)

Author: WhiredPlanck

app/src/main/jni/librime_jni/rime_jni.cc

@@ -44,7 +44,6 @@ void init_traits(JNIEnv *env, jstring shared_data_dir, jstring user_data_dir, vo
     const char* p_user_data_dir = user_data_dir == nullptr ? nullptr : env->GetStringUTFChars(user_data_dir, nullptr);
     traits.shared_data_dir = p_shared_data_dir;
     traits.user_data_dir = p_user_data_dir;
-    traits.log_dir = (std::string(p_user_data_dir) + "/log").c_str();
     traits.app_name = "rime.trime";
     func(&traits);
     env->ReleaseStringUTFChars(shared_data_dir, p_shared_data_dir);