arch: Delete now unused operand types.

These have been subsumed into the RegOperand type, and are fronted by
the *RegOperandDesc OperandDesc classes.

Change-Id: If57b683b06f3002004863c2d74f2a645882fbd41
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/49734
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/arch/isa_parser/operand_types.py

@@ -283,30 +283,18 @@ class RegOperandDesc(OperandDesc):
         super().__init__(*args, **kwargs)
         self.attrs['reg_class'] = reg_class
 
-class IntRegOperand(RegValOperand):
-    reg_class = 'IntRegClass'
-
 class IntRegOperandDesc(RegOperandDesc):
     def __init__(self, *args, **kwargs):
         super().__init__('IntRegClass', RegValOperand, *args, **kwargs)
 
-class FloatRegOperand(RegValOperand):
-    reg_class = 'FloatRegClass'
-
 class FloatRegOperandDesc(RegOperandDesc):
     def __init__(self, *args, **kwargs):
         super().__init__('FloatRegClass', RegValOperand, *args, **kwargs)
 
-class CCRegOperand(RegValOperand):
-    reg_class = 'CCRegClass'
-
 class CCRegOperandDesc(RegOperandDesc):
     def __init__(self, *args, **kwargs):
         super().__init__('CCRegClass', RegValOperand, *args, **kwargs)
 
-class VecElemOperand(RegValOperand):
-    reg_class = 'VecElemClass'
-
 class VecElemOperandDesc(RegOperandDesc):
     def __init__(self, *args, **kwargs):
         super().__init__('VecElemClass', RegValOperand, *args, **kwargs)