VR: remove unused variable from VTS test

Test: pass
Change-Id: I7c39a2272b8d138acb73014497d3240cb22711a7
diff --git a/vr/1.0/default/Vr.cpp b/vr/1.0/default/Vr.cpp
index 345db99..4bba9eb 100644
--- a/vr/1.0/default/Vr.cpp
+++ b/vr/1.0/default/Vr.cpp
@@ -43,7 +43,6 @@
 }
 
 IVr* HIDL_FETCH_IVr(const char * /*name*/) {
-    vr_module_t *vr_module;
     const hw_module_t *hw_module = NULL;
 
     int ret = hw_get_module(VR_HARDWARE_MODULE_ID, &hw_module);