test75: Remove precheck test

This has not been needed since commit 9fa42bed and often prevents it
from running at all with dynamic test ports.

tests/data/test75

@@ -27,11 +27,6 @@ HTTP, urlglob retrieval with bad range
  <command option="no-output">
 "http://a-site-never-accessed.example.org/[2-1]" -o "log/weee#1.dump" --stderr -
 </command>
-# The error message on stdout implicitly depends on the length of the
-# URL, so refuse to run if the length is unexpected.
-<precheck>
-perl %SRCDIR/libtest/test75.pl http://%HOSTIP:%NOLISTENPORT/ 22
-</precheck>
 </client>
 
 #

tests/libtest/Makefile.am

@@ -44,7 +44,7 @@ AM_CPPFLAGS = -I$(top_srcdir)/include        \
               -I$(top_srcdir)/lib
 endif
 
-EXTRA_DIST = test75.pl test307.pl test610.pl test613.pl test1013.pl \
+EXTRA_DIST = test307.pl test610.pl test613.pl test1013.pl \
   test1022.pl Makefile.inc notexists.pl CMakeLists.txt mk-lib1521.pl
 
 CFLAG_CURL_SYMBOL_HIDING = @CFLAG_CURL_SYMBOL_HIDING@

tests/libtest/test75.pl

@@ -1,34 +0,0 @@
-#!/usr/bin/env perl
-#***************************************************************************
-#                                  _   _ ____  _
-#  Project                     ___| | | |  _ \| |
-#                             / __| | | | |_) | |
-#                            | (__| |_| |  _ <| |___
-#                             \___|\___/|_| \_\_____|
-#
-# Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
-#
-# This software is licensed as described in the file COPYING, which
-# you should have received as part of this distribution. The terms
-# are also available at https://curl.haxx.se/docs/copyright.html.
-#
-# You may opt to use, copy, modify, merge, publish, distribute and/or sell
-# copies of the Software, and permit persons to whom the Software is
-# furnished to do so, under the terms of the COPYING file.
-#
-# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
-# KIND, either express or implied.
-#
-###########################################################################
-# Check that the length of a given URL is correct
-if ( $#ARGV != 1 )
-{
-    print "Usage: $0 string length\n";
-    exit 3;
-}
-if (length(@ARGV[0]) != @ARGV[1])
-{
-    print "Given host IP and port not supported\n";
-    exit 1;
-}
-exit 0;