memprof: remove unused arguments

Both `humanize.profile_info` and `process.form_heap_delta`
don't need the symtab, so the argument can be dropped.

Part of tarantool/tarantool#5994

Author: mkokryashkin

tools/memprof.lua

@@ -102,9 +102,9 @@ local function dump(inputfile)
   local symbols = symtab.parse(reader)
   local events = memprof.parse(reader, symbols)
   if not leak_only then
-    view.profile_info(events, symbols)
+    view.profile_info(events)
   end
-  local dheap = process.form_heap_delta(events, symbols)
+  local dheap = process.form_heap_delta(events)
   view.leak_info(dheap)
   view.aliases(symbols)
   -- XXX: The second argument is required to properly close Lua