Remove unused variables and add a const

src/miner.cpp

@@ -1079,7 +1079,7 @@ void static RandomXMiner()
     // Each thread has its own counter
     unsigned int nExtraNonce = 0;
 
-    uint8_t *script; uint64_t total; int32_t i,j,gpucount=HUSH_MAXGPUCOUNT,notaryid = -1;
+    int32_t gpucount=HUSH_MAXGPUCOUNT;
     while ( (ASSETCHAIN_INIT == 0 || HUSH_INITDONE == 0) )
     {
         sleep(1);
@@ -1204,7 +1204,7 @@ void static RandomXMiner()
                 rxdebug("%s: initialized cache with keyHeight=%d, randomxBlockKey=%s\n", keyHeight, randomxBlockKey.ToString().c_str());
             }
 
-            int initThreadCount = std::thread::hardware_concurrency();
+            const int initThreadCount = std::thread::hardware_concurrency();
             if(initThreadCount > 1) {
                 rxdebug("%s: initializing dataset with %d threads\n", initThreadCount);
                 std::vector<std::thread> threads;