runtime(netrw): don't echo empty lines (#13431)

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/autoload/netrw.vim b/runtime/autoload/netrw.vim
index 33a2fdd..d2df846 100644
--- a/runtime/autoload/netrw.vim
+++ b/runtime/autoload/netrw.vim
@@ -1166,7 +1166,6 @@
    2match none
    if exists("s:explore_match")  | unlet s:explore_match  | endif
    if exists("s:explore_prvdir") | unlet s:explore_prvdir | endif
-   echo " "
 "   call Decho("cleared explore match list",'~'.expand("<slnum>"))
   endif
 
@@ -5730,8 +5729,6 @@
   if exists("w:netrw_explore_list")   |unlet w:netrw_explore_list   |endif
   if exists("w:netrw_explore_bufnr")  |unlet w:netrw_explore_bufnr  |endif
 "   redraw!
-  echo " "
-  echo " "
 "  call Dret("s:NetrwClearExplore")
 endfun