CPU: Get rid of the now unnecessary getInst/setInst family of functions.

This code is no longer needed because of the preceeding change which adds a
StaticInstPtr parameter to the fault's invoke method, obviating the only use
for this pair of functions.

src/cpu/inorder/thread_context.cc

@@ -171,12 +171,6 @@ InOrderThreadContext::unserialize(Checkpoint *cp, const std::string &section)
     panic("unserialize unimplemented");    
 }
 
-TheISA::MachInst
-InOrderThreadContext:: getInst()
-{
-    return thread->getInst();
-}
-
 
 void
 InOrderThreadContext::copyArchRegs(ThreadContext *src_tc)

src/cpu/inorder/thread_context.hh

@@ -177,11 +177,6 @@ class InOrderThreadContext : public ThreadContext
     /** Returns this thread's ID number. */
     int getThreadNum() { return thread->readTid(); }
 
-    /** Returns the instruction this thread is currently committing.
-     *  Only used when an instruction faults.
-     */
-    TheISA::MachInst getInst();
-
     /** Copies the architectural registers from another TC into this TC. */
     void copyArchRegs(ThreadContext *src_tc);