Remove unused variable

engine/Device.cpp

@@ -82,7 +82,6 @@ Device::Device()
 	, m_is_init(false)
 	, m_is_running(false)
 	, m_is_paused(false)
-	, m_is_really_paused(false)
 
 	, m_frame_count(0)
 

engine/Device.h

@@ -169,8 +169,6 @@ protected:
 	bool					m_is_running	: 1;
 	bool					m_is_paused		: 1;
 
-	bool 					m_is_really_paused :1;
-
 	uint64_t				m_frame_count;
 
 	uint64_t				m_last_time;