kvm: Remove the unused hostFreq member from BaseKvmCPU

src/cpu/kvm/base.cc

@@ -79,7 +79,6 @@ BaseKvmCPU::BaseKvmCPU(BaseKvmCPUParams *params)
       tickEvent(*this),
       activeInstPeriod(0),
       perfControlledByTimer(params->usePerfOverflow),
-      hostFreq(params->hostFreq),
       hostFactor(params->hostFactor),
       drainManager(NULL),
       ctrInsts(0)

src/cpu/kvm/base.hh

@@ -719,9 +719,6 @@ class BaseKvmCPU : public BaseCPU
      */
     std::unique_ptr<BaseKvmTimer> runTimer;
 
-    /** Host frequency */
-    Tick hostFreq;
-
     /** Host factor as specified in the configuration */
     float hostFactor;