cpu, fastmodel: Remove the old getDTBPtr/getITBPtr virtual methods

JIRA: https://gem5.atlassian.net/browse/GEM5-790

Change-Id: I6c6cdeaa3ae1433624e4e5b30b031d49e822f0e0
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34984
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Anthony Gutierrez <anthony.gutierrez@amd.com>

src/cpu/thread_context.hh

@@ -130,10 +130,6 @@ class ThreadContext : public PCEventScope
 
     virtual void setContextId(ContextID id) = 0;
 
-    virtual BaseTLB *getITBPtr() = 0;
-
-    virtual BaseTLB *getDTBPtr() = 0;
-
     virtual BaseMMU *getMMUPtr() = 0;
 
     virtual CheckerCPU *getCheckerCpuPtr() = 0;