api-test.t: don't print request content

Dependencies

• [2] GLJD3PG2 api-test.t: make it work under yath
• [3] LZVO64YG Merge in the first bits of the API work
• [4] MMHOJIGD Test whether incorrect passwords are rejected
• [5] XNXX4WCQ api-test: clean up, use subtests

Change contents

• edit in t/api-test.t at line 50
  [2.1005]→[3.36888:36917](∅→∅),[3.36888]→[3.36888:36917](∅→∅)
  − print $res->as_string();