Revert "Add missing shader stages in shader keyword copying #6008"

This reverts commit d63689c.

Author: sebastienlagarde

com.unity.shadergraph/CHANGELOG.md

@@ -6,15 +6,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [10.8.0] - 2021-09-20
 
+Version Updated
+The version number for this package has increased due to a version update of a related graphics package.
+
 ### Fixed
-- Fixed ShaderGraph errors caused by very large or very small default values for color or float properties [1313932]
-- Fixed a ShaderGraph warning when connecting a node using Object Space BiTangent to the vertex stage [1361512] (https://issuetracker.unity3d.com/issues/shader-graph-cross-implicit-truncation-of-vector-type-errors-are-thrown-when-connecting-transform-node-to-vertex-block)
-- Fixed missing shader keyword stage during keyword copying.
+ - Fixed ShaderGraph errors caused by very large or very small default values for color or float properties [1313932]
+ - Fixed a ShaderGraph warning when connecting a node using Object Space BiTangent to the vertex stage [1361512] (https://issuetracker.unity3d.com/issues/shader-graph-cross-implicit-truncation-of-vector-type-errors-are-thrown-when-connecting-transform-node-to-vertex-block)
 
 ## [10.7.0] - 2021-07-02
 
 ### Added
-- Added a ShaderGraph animated preview framerate throttle.
+  - Added a ShaderGraph animated preview framerate throttle.
 
 ### Fixed
 - Fixed SubGraph SamplerState property defaults not being respected [1336119]

com.unity.shadergraph/Editor/Data/Graphs/ShaderKeyword.cs

@@ -198,7 +198,6 @@ internal override ShaderInput Copy()
                 keywordScope = keywordScope,
                 entries = entries,
                 value = value,
-                keywordStages = keywordStages
             };
         }
     }