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/mips/malta.cc

@@ -95,9 +95,3 @@ Malta::unserialize(CheckpointIn &cp)
 {
     UNSERIALIZE_ARRAY(intr_sum_type, Malta::Max_CPUs);
 }
-
-Malta *
-MaltaParams::create() const
-{
-    return new Malta(*this);
-}

src/dev/mips/malta_cchip.cc

@@ -139,10 +139,3 @@ void
 MaltaCChip::unserialize(CheckpointIn &cp)
 {
 }
-
-MaltaCChip *
-MaltaCChipParams::create() const
-{
-    return new MaltaCChip(*this);
-}
-

src/dev/mips/malta_io.cc

@@ -143,9 +143,3 @@ MaltaIO::startup()
     rtc.startup();
     pitimer.startup();
 }
-
-MaltaIO *
-MaltaIOParams::create() const
-{
-    return new MaltaIO(*this);
-}