From: @dinglinhe123
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

From: @simson_wu
Reviewed-by: @ginfung,@zh_qh
Signed-off-by: @zh_qh

From: @tom__chen
Reviewed-by: @robingrosman,@mikef,@robingrosman
Signed-off-by: @robingrosman

From: @liu_xiao_93
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

From: @dinglinhe123
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

From: @jiahongqian
Reviewed-by: @wang_zi_dong,@ljl0711
Signed-off-by: @ljl0711

From: @dinglinhe123
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

From: @pan-fei
Reviewed-by: @gemini524,@kingxian,@liangchenghui
Signed-off-by: @kingxian

From: @liangzhibo
Reviewed-by: @ginfung,@ginfung,@zh_qh
Signed-off-by: @zh_qh

From: @zhao_ting_v
Reviewed-by: @wuxuejian,@liangchenghui
Signed-off-by: @wuxuejian

From: @shen_jingxing
Reviewed-by: 
Signed-off-by:

From: @simson_wu
Reviewed-by: @ginfung,@zh_qh
Signed-off-by: @zh_qh

From: @mind-lh
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

From: @zhang_yi2020
Reviewed-by: @gemini524,@liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui,@wuxuejian

From: @gong_zi_yan
Reviewed-by: @stsuteng,@yangzhenzhang
Signed-off-by: @stsuteng

From: @dayschan
Reviewed-by: @gaoxiong1,@dylangeng,@gaoxiong1
Signed-off-by: @dylangeng,@dylangeng

From: @liu_xiao_93
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

From: @anrui-wang
Reviewed-by: @wuxuejian,@liangchenghui
Signed-off-by: @wuxuejian

1. set class GraphKernel as deprecated, and treat it as Cell
2. set class InplaceAssign as deprecated, suggested using Assign instead.
3. set op_selector as deprecated, removed the _selected_ops and _selected_grad_ops, replaced with real operations
4. removed the two passes of GraphKernel from frontend
5. removed the GraphKernel's codes from other modules

From: @dinglongwei
Reviewed-by: @wuxuejian,@liangchenghui
Signed-off-by: @wuxuejian

From: @liangzhibo
Reviewed-by: @zh_qh,@ginfung,@ginfung,@zh_qh
Signed-off-by: @zh_qh,@zh_qh

From: @xuguoyang5566
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

From: @huangbo77
Reviewed-by: @wuxuejian,@oacjiewen
Signed-off-by: @wuxuejian

From: @jachua
Reviewed-by: @guoqi1024,@liangchenghui
Signed-off-by: @liangchenghui

From: @liangzhibo
Reviewed-by: @zh_qh,@ginfung
Signed-off-by: @zh_qh