Revert rL342465: Added function to set a register to a particular value + tests.

rL342465 is breaking the MSVC buildbots.

llvm-svn: 342490
diff --git a/llvm/tools/llvm-exegesis/lib/Target.h b/llvm/tools/llvm-exegesis/lib/Target.h
index 41d77e3..8514793 100644
--- a/llvm/tools/llvm-exegesis/lib/Target.h
+++ b/llvm/tools/llvm-exegesis/lib/Target.h
@@ -36,6 +36,10 @@
   virtual void addTargetSpecificPasses(llvm::PassManagerBase &PM) const {}
 
   // Generates code to move a constant into a the given register.
+  virtual std::vector<llvm::MCInst>
+  setRegToConstant(const llvm::MCSubtargetInfo &STI, unsigned Reg) const = 0;
+
+  // Generates code to move a constant into a the given register.
   virtual std::vector<llvm::MCInst> setRegTo(const llvm::MCSubtargetInfo &STI,
                                              const llvm::APInt &Value,
                                              unsigned Reg) const = 0;