Remove unused debug variable in NvmeSensorMain

This variable was unused, as clang correctly points out.  Remove it.

Tested: Code complies.  No-op change.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I7d10edb2e9f2b5c7d1757ae78459287bab3e8aec
diff --git a/src/NVMeSensorMain.cpp b/src/NVMeSensorMain.cpp
index d032b6e..f15f867 100644
--- a/src/NVMeSensorMain.cpp
+++ b/src/NVMeSensorMain.cpp
@@ -25,8 +25,6 @@
 
 static NVMEMap nvmeDeviceMap;
 
-static constexpr bool debug = false;
-
 NVMEMap& getNVMEMap()
 {
     return nvmeDeviceMap;