correction in help-testAndWait.txt

Author: Siddhantshukla814

test/fixtures/command-line/help-testAndWait.txt

@@ -146,14 +146,10 @@ Options:
       --spdy3                         force SPDY version 3 (Chrome only)
       --swrender                      force software rendering, disable GPU
                                       acceleration (Chrome only)
-      --poll [interval]               poll for results after test is scheduled
-                                      at every <interval> seconds [5]
       --wait [hostname:port]          wait for test results informed by agent
                                       once complete listening on
                                       <hostname>:<port> [hostname:first port
                                       available above 8000]
-      --timeout <seconds>             timeout for polling and waiting results
-                                      [no timeout]
   -e, --request <id>                  echo request ID, useful to track
                                       asynchronous requests
       --breakdown                     include the breakdown of requests and