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/dev/arm/rv_ctrl.cc

@@ -313,21 +313,3 @@ RealViewTemperatureSensor::read() const
     // Report a dummy 25 degrees temperature
     return 25000000;
 }
-
-RealViewCtrl *
-RealViewCtrlParams::create() const
-{
-    return new RealViewCtrl(*this);
-}
-
-RealViewOsc *
-RealViewOscParams::create() const
-{
-    return new RealViewOsc(*this);
-}
-
-RealViewTemperatureSensor *
-RealViewTemperatureSensorParams::create() const
-{
-    return new RealViewTemperatureSensor(*this);
-}