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/ps2/keyboard.cc

@@ -171,10 +171,3 @@ PS2Keyboard::keyPress(uint32_t key, bool down)
     for (uint8_t c : keys)
         send(c);
 }
-
-
-PS2Keyboard *
-PS2KeyboardParams::create() const
-{
-    return new PS2Keyboard(*this);
-}

src/dev/ps2/mouse.cc

@@ -166,9 +166,3 @@ PS2Mouse::unserialize(CheckpointIn &cp)
     UNSERIALIZE_SCALAR(resolution);
     UNSERIALIZE_SCALAR(sampleRate);
 }
-
-PS2Mouse *
-PS2MouseParams::create() const
-{
-    return new PS2Mouse(*this);
-}

src/dev/ps2/touchkit.cc

@@ -204,9 +204,3 @@ PS2TouchKit::mouseAt(uint16_t x, uint16_t y, uint8_t buttons)
 
     send(resp, sizeof(resp));
 }
-
-PS2TouchKit *
-PS2TouchKitParams::create() const
-{
-    return new PS2TouchKit(*this);
-}