minor updates

hw/rtl/libs/VX_countones.v

@@ -1,26 +0,0 @@
-
-`include "VX_platform.vh"
-
-module VX_countones #(
-    parameter N = 10,
-    parameter N_BITS = $clog2(N+1)
-) (
-    input wire [N-1:0]       valids,
-    output wire [N_BITS-1:0] count    
-);
-    /*reg [N_BITS-1:0] count_r;
-
-    always @(*) begin
-        count_r = 0;
-        for (integer i = N-1; i >= 0; i = i - 1) begin
-            if (valids[i]) begin
-                count_r = count_r + N_BITS'(1);
-            end
-        end
-    end
-
-    assign count = count_r;*/
-
-    assign count = $countones(valids);
-
-endmodule