Cleanup dead code (#2143)

src/renderer_d3d12.cpp

@@ -2329,12 +2329,10 @@ namespace bgfx { namespace d3d12
 			if (_flags&BGFX_UNIFORM_FRAGMENTBIT)
 			{
 				bx::memCopy(&m_fsScratch[_regIndex], _val, _numRegs*16);
-				m_fsChanges += _numRegs;
 			}
 			else
 			{
 				bx::memCopy(&m_vsScratch[_regIndex], _val, _numRegs*16);
-				m_vsChanges += _numRegs;
 			}
 		}
 
@@ -2362,15 +2360,11 @@ namespace bgfx { namespace d3d12
 				uint32_t size = program.m_vsh->m_size;
 				bx::memCopy(data, m_vsScratch, size);
 				data += size;
-
-				m_vsChanges = 0;
 			}
 
 			if (NULL != program.m_fsh)
 			{
 				bx::memCopy(data, m_fsScratch, program.m_fsh->m_size);
-
-				m_fsChanges = 0;
 			}
 		}
 
@@ -3397,8 +3391,6 @@ namespace bgfx { namespace d3d12
 
 		uint8_t m_fsScratch[64<<10];
 		uint8_t m_vsScratch[64<<10];
-		uint32_t m_fsChanges;
-		uint32_t m_vsChanges;
 
 		FrameBufferHandle m_fbh;
 		uint32_t m_backBufferColorIdx;