0024830: Remove redundant keyword 'mutable' in CDL declarations

Redundant keyword 'mutable' removed in CDL files.
In IGESConvGeom_GeomBuilder, unused methods MakeXY() and MakeXYZ() removed.
Method StepAP214_AutoDesignGroupAssignment::Init() replicating same method of the base class is removed as it causes CDL extraction error after above (seemingly irrelevant) changes.

src/Adaptor3d/Adaptor3d_GenHCurve.cdl

@@ -36,13 +36,13 @@ is
 
     Create
 	---Purpose: Creates an empty GenHCurve.
-    	returns mutable GenHCurve from Adaptor3d; 
+    	returns GenHCurve from Adaptor3d; 
     
 
     Create(C: TheCurve)
     
 	---Purpose: Creates a GenHCurve from a Curve
-    	returns mutable GenHCurve from Adaptor3d; 
+    	returns GenHCurve from Adaptor3d; 
 
 
     Set(me: mutable; C: TheCurve)

src/Adaptor3d/Adaptor3d_GenHSurface.cdl

@@ -39,13 +39,13 @@ is
     Create
     
 	---Purpose: Creates an empty GenHSurface.
-    	returns mutable GenHSurface from Adaptor3d; 
+    	returns GenHSurface from Adaptor3d; 
     
 
     Create(S: TheSurface)
     
 	---Purpose: Creates a GenHSurface from a Surface.
-    	returns mutable GenHSurface from Adaptor3d; 
+    	returns GenHSurface from Adaptor3d; 
 
 
     Set(me: mutable; S: TheSurface)

src/Adaptor3d/Adaptor3d_HVertex.cdl

@@ -29,13 +29,13 @@ is
 
     Create
     
-    	returns mutable HVertex from Adaptor3d;
+    	returns HVertex from Adaptor3d;
 
 
     Create(P: Pnt2d from gp; Ori: Orientation from TopAbs;
            Resolution: Real from Standard)
 
-    	returns mutable HVertex from Adaptor3d;
+    	returns HVertex from Adaptor3d;
 
 
     Value(me: mutable)
@@ -64,7 +64,7 @@ is
     is virtual;
 
 
-    IsSame(me: mutable; Other: mutable like me)
+    IsSame(me: mutable; Other: like me)
     
     	returns Boolean from Standard
     is virtual;

src/Adaptor3d/Adaptor3d_TopolTool.cdl

@@ -44,12 +44,12 @@ is
 
     Create
     
-    	returns mutable TopolTool from Adaptor3d;
+    	returns TopolTool from Adaptor3d;
 
 
     Create(Surface: HSurface from Adaptor3d)
     
-    	returns mutable TopolTool from Adaptor3d;
+    	returns TopolTool from Adaptor3d;
 
 
     Initialize(me: mutable)
@@ -79,7 +79,7 @@ is
 
     Value(me: mutable)
     
-    	returns mutable HCurve2d from Adaptor2d
+    	returns HCurve2d from Adaptor2d
         raises DomainError from Standard
     is virtual;
 	
@@ -103,7 +103,7 @@ is
 
     Vertex(me: mutable)
     
-    	returns mutable HVertex from Adaptor3d
+    	returns HVertex from Adaptor3d
 	raises DomainError from Standard
     is virtual;