get rid of warnings 2

Author: pdziekan

src/impl/particles_impl_hskpng_count.ipp

@@ -28,7 +28,6 @@ namespace libcloudphxx
         count_num.begin()                       // output - values
       );
       count_n = n.first - count_ijk.begin();
-      assert(count_n >= 0);
       assert(count_n <= n_cell);
     }   
   };  

src/impl/particles_impl_init_count_num.ipp

@@ -124,8 +124,8 @@ namespace libcloudphxx
 
       switch(n_dims)
       {
-        case 0 : throw std::runtime_error("init_count_num_src called in 0D"); break;
-        case 1 : throw std::runtime_error("init_count_num_src called in 1D"); break;
+        case 0 : throw std::runtime_error("init_count_num_src called in 0D");
+        case 1 : throw std::runtime_error("init_count_num_src called in 1D");
         case 2:
           thrust::transform(
             zero,

src/impl/particles_impl_moms.ipp

@@ -216,7 +216,7 @@ namespace libcloudphxx
         }
       }
 #endif
-      assert(count_n >= 0 && count_n <= n_cell);
+      assert(count_n <= n_cell);
       if(specific)
       {
         // dividing by dv