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/testers/directedtest/InvalidateGenerator.cc

@@ -133,9 +133,3 @@ InvalidateGenerator::performCallback(uint32_t proc, Addr address)
     }
 
 }
-
-InvalidateGenerator *
-InvalidateGeneratorParams::create() const
-{
-    return new InvalidateGenerator(*this);
-}

src/cpu/testers/directedtest/RubyDirectedTester.cc

@@ -136,9 +136,3 @@ RubyDirectedTester::wakeup()
         exitSimLoop("Ruby DirectedTester completed");
     }
 }
-
-RubyDirectedTester *
-RubyDirectedTesterParams::create() const
-{
-    return new RubyDirectedTester(*this);
-}

src/cpu/testers/directedtest/SeriesRequestGenerator.cc

@@ -108,9 +108,3 @@ SeriesRequestGenerator::performCallback(uint32_t proc, Addr address)
         m_active_node = 0;
     }
 }
-
-SeriesRequestGenerator *
-SeriesRequestGeneratorParams::create() const
-{
-    return new SeriesRequestGenerator(*this);
-}