Stop adding a "contact" user to the admin course when creating a course.

There is no need for this. These users are not used for anything and
have no real purpose.  Furthermore, the users are just clutter in the
admin course accounts manager.

There are also issues that can be caused by these users existing.  One
issue occurs if you create a course with an initial user, then delete
that course, then later create a course with the same course id but with
a different initial user.  Then if you delete the second course it dies
with the error "Incorrect number of contacts for the course courseID".

lib/WeBWorK/ContentGenerator/CourseAdmin.pm

@@ -422,47 +422,6 @@ sub do_add_course ($c) {
 				$add_initial_email,
 			)
 		);
-		# Add contact to admin course as student?
-		# FIXME -- should we do this?
-		if ($add_initial_userID =~ /\S/) {
-			my $composite_id = "${add_initial_userID}_${add_courseID}";    # student id includes school name and contact
-			my $User         = $db->newUser(
-				user_id       => $composite_id,                            # student id includes school name and contact
-				first_name    => $add_initial_firstName,
-				last_name     => $add_initial_lastName,
-				student_id    => $add_initial_userID,
-				email_address => $add_initial_email,
-				status        => 'C',
-			);
-			my $Password = $db->newPassword(
-				user_id  => $composite_id,
-				password => cryptPassword($add_initial_password),
-			);
-			my $PermissionLevel = $db->newPermissionLevel(
-				user_id    => $composite_id,
-				permission => '0',
-			);
-			# add contact to admin course as student
-			# or if this contact and course already exist in a dropped status
-			# change the student's status to enrolled
-			if (my $oldUser = $db->getUser($composite_id)) {
-				push(
-					@$output,
-					$c->tag(
-						'div',
-						class => 'alert alert-danger p-1 mb-2',
-						$c->maketext('Replacing old data for [_1]: status: [_2]', $composite_id, $oldUser->status)
-					)
-				);
-				$db->deleteUser($composite_id);
-			}
-			eval { $db->addUser($User) };
-			warn $@ if $@;
-			eval { $db->addPassword($Password) };
-			warn $@ if $@;
-			eval { $db->addPermissionLevel($PermissionLevel) };
-			warn $@ if $@;
-		}
 		push(
 			@$output,
 			$c->tag(
@@ -885,19 +844,6 @@ sub do_delete_course ($c) {
 				$c->tag('div', class => 'font-monospace', $error))->join('')
 		);
 	} else {
-		# Mark the contact person in the admin course as dropped.
-		# Find the contact person for the course by searching the admin classlist.
-		my @contacts = grep {/_$delete_courseID$/} $db->listUsers;
-		if (@contacts) {
-			die "Incorrect number of contacts for the course $delete_courseID: " . join(' ', @contacts)
-				if @contacts != 1;
-
-			# Mark the contact person as dropped.
-			my $User = $db->getUser($contacts[0]);
-			$User->status(($ce->status_name_to_abbrevs('Drop'))[0]);
-			$db->putUser($User);
-		}
-
 		writeLog($ce, 'hosted_courses', join("\t", "\tDeleted", '', '', $delete_courseID));
 
 		return $c->c(
@@ -1117,21 +1063,6 @@ sub do_archive_course ($c) {
 					)
 				);
 			} else {
-				# Mark the contact person in the admin course as dropped.
-				# Find the contact person for the course by searching the admin classlist.
-				my @contacts = grep {/_$archive_courseID$/} $db->listUsers;
-				if (@contacts) {
-					die "Incorrect number of contacts for the course $archive_courseID" . join(' ', @contacts)
-						if @contacts != 1;
-					my $composite_id = $contacts[0];
-
-					my $User         = $db->getUser($composite_id);
-					my $status_name  = 'Drop';
-					my $status_value = ($ce->status_name_to_abbrevs($status_name))[0];
-					$User->status($status_value);
-					$db->putUser($User);
-				}
-
 				push(
 					@$output,
 					$c->tag(