Revert "Update Diffuse.shadergraph"

This reverts commit fe85deb.

Author: Pauliusd01

ExternalSampleProjects/TouchSamples/Assets/Demo/Shaders/Rolling/Diffuse.shadergraph

@@ -311,10 +311,10 @@
     "m_Guid": {
         "m_GuidSerialized": "ffe1b62b-e6d0-4107-9f7a-56d4bb4b5d98"
     },
-    "m_Name": "Texture Sample",
+    "m_Name": "Texture",
     "m_DefaultRefNameVersion": 1,
-    "m_RefNameGeneratedByDisplayName": "Texture Sample",
-    "m_DefaultReferenceName": "_Texture_Sample",
+    "m_RefNameGeneratedByDisplayName": "Texture",
+    "m_DefaultReferenceName": "_Texture",
     "m_OverrideReferenceName": "",
     "m_GeneratePropertyBlock": true,
     "m_UseCustomSlotLabel": false,
@@ -339,7 +339,7 @@
     "m_Type": "UnityEditor.ShaderGraph.Texture2DMaterialSlot",
     "m_ObjectId": "34691c31dbf34799b204b066c2e13b54",
     "m_Id": 0,
-    "m_DisplayName": "Texture Sample",
+    "m_DisplayName": "Texture",
     "m_SlotType": 1,
     "m_Hidden": false,
     "m_ShaderOutputName": "Out",
@@ -624,7 +624,7 @@
     "m_Type": "UnityEditor.ShaderGraph.Vector4MaterialSlot",
     "m_ObjectId": "6c11b31e69074c7eaaba6be5fd8e9883",
     "m_Id": 0,
-    "m_DisplayName": "Diffuse Color",
+    "m_DisplayName": "Diffuse",
     "m_SlotType": 1,
     "m_Hidden": false,
     "m_ShaderOutputName": "Out",
@@ -1479,10 +1479,10 @@
     "m_Guid": {
         "m_GuidSerialized": "850bfd61-5331-48ea-8846-c4e0ad04e0e8"
     },
-    "m_Name": "Diffuse Color",
+    "m_Name": "Diffuse",
     "m_DefaultRefNameVersion": 1,
-    "m_RefNameGeneratedByDisplayName": "Diffuse Color",
-    "m_DefaultReferenceName": "_Diffuse_Color",
+    "m_RefNameGeneratedByDisplayName": "Diffuse",
+    "m_DefaultReferenceName": "_Diffuse",
     "m_OverrideReferenceName": "",
     "m_GeneratePropertyBlock": true,
     "m_UseCustomSlotLabel": false,