h2load: Remove "(client)" from per-client req/s stat for simplicity

doc/h2load.h2r

@@ -88,7 +88,7 @@ time for 1st byte (of (decrypted in case of TLS) application data)
     deviation range (mean +/- sd) against total number of successful
     connections.
 
-req/s (client)
+req/s
   min
     The minimum request per second among all clients.
   max

src/h2load.cc

@@ -2253,7 +2253,7 @@ time for request: )" << std::setw(10) << util::format_duration(ts.request.min)
             << util::format_duration(ts.ttfb.mean) << "  " << std::setw(10)
             << util::format_duration(ts.ttfb.sd) << std::setw(9)
             << util::dtos(ts.ttfb.within_sd) << "%"
-            << "\nreq/s (client)  : " << std::setw(10) << ts.rps.min << "  "
+            << "\nreq/s           : " << std::setw(10) << ts.rps.min << "  "
             << std::setw(10) << ts.rps.max << "  " << std::setw(10)
             << ts.rps.mean << "  " << std::setw(10) << ts.rps.sd << std::setw(9)
             << util::dtos(ts.rps.within_sd) << "%" << std::endl;