misc: Delete the now unnecessary create methods.

Most create() methods are no longer necessary. This change deletes them,
and occasionally moves some code from them into the constructors they
call.

Change-Id: Icbab29ba280144b892f9b12fac9e29a0839477e5
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/36536
Reviewed-by: Gabe Black <gabe.black@gmail.com>
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/cpu/func_unit.cc

@@ -95,38 +95,3 @@ FuncUnit::isPipelined(OpClass capability)
 {
     return pipelined[capability];
 }
-
-////////////////////////////////////////////////////////////////////////////
-//
-//  The SimObjects we use to get the FU information into the simulator
-//
-////////////////////////////////////////////////////////////////////////////
-
-//
-//  We use 2 objects to specify this data in the INI file:
-//    (1) OpDesc - Describes the operation class & latencies
-//                   (multiple OpDesc objects can refer to the same
-//                   operation classes)
-//    (2) FUDesc - Describes the operations available in the unit &
-//                   the number of these units
-//
-//
-
-
-//
-//  The operation-class description object
-//
-OpDesc *
-OpDescParams::create() const
-{
-    return new OpDesc(*this);
-}
-
-//
-//  The FuDesc object
-//
-FUDesc *
-FUDescParams::create() const
-{
-    return new FUDesc(*this);
-}