chore: rename Definition.lean => DefView.lean

src/Lean/Elab/Declaration.lean

@@ -5,7 +5,7 @@ Authors: Leonardo de Moura, Sebastian Ullrich
 -/
 import Lean.Util.CollectLevelParams
 import Lean.Elab.DeclUtil
-import Lean.Elab.Definition
+import Lean.Elab.DefView
 import Lean.Elab.Inductive
 import Lean.Elab.Structure
 import Lean.Elab.MutualDef

src/Lean/Elab/Inductive.lean

@@ -9,7 +9,7 @@ import Lean.Util.CollectLevelParams
 import Lean.Util.Constructions
 import Lean.Elab.Command
 import Lean.Elab.CollectFVars
-import Lean.Elab.Definition
+import Lean.Elab.DefView
 import Lean.Elab.DeclUtil
 
 namespace Lean

src/Lean/Elab/MutualDef.lean

@@ -6,7 +6,7 @@ Authors: Leonardo de Moura
 import Lean.Meta.Closure
 import Lean.Meta.Check
 import Lean.Elab.Command
-import Lean.Elab.Definition
+import Lean.Elab.DefView
 
 namespace Lean
 namespace Elab