Remove Minz validation during install. (#3302)

As FRSS always comes with Minz, there is no need to validate that
it is there during install. If it turns out we need to validate that,
we might need to validate other libraries as well.

app/install.php

@@ -384,12 +384,6 @@ function printStep1() {
 	<p class="alert alert-error"><span class="alert-head"><?= _t('gen.short.damn') ?></span> <?= _t('install.check.php.nok', PHP_VERSION, '5.6.0') ?></p>
 	<?php } ?>
 
-	<?php if ($res['minz'] == 'ok') { ?>
-	<p class="alert alert-success"><span class="alert-head"><?= _t('gen.short.ok') ?></span> <?= _t('install.check.minz.ok') ?></p>
-	<?php } else { ?>
-	<p class="alert alert-error"><span class="alert-head"><?= _t('gen.short.damn') ?></span> <?= _t('install.check.minz.nok', join_path(LIB_PATH, 'Minz')) ?></p>
-	<?php } ?>
-
 	<?php if ($res['pdo'] == 'ok') { ?>
 	<p class="alert alert-success"><span class="alert-head"><?= _t('gen.short.ok') ?></span> <?= _t('install.check.pdo.ok') ?></p>
 	<?php } else { ?>

lib/lib_install.php

@@ -7,7 +7,6 @@ Minz_Configuration::register('default_user', join_path(FRESHRSS_PATH, 'config-us
 
 function checkRequirements($dbType = '') {
 	$php = version_compare(PHP_VERSION, '5.6.0') >= 0;
-	$minz = file_exists(join_path(LIB_PATH, 'Minz'));
 	$curl = extension_loaded('curl');
 	$pdo_mysql = extension_loaded('pdo_mysql');
 	$pdo_sqlite = extension_loaded('pdo_sqlite');
@@ -50,7 +49,6 @@ function checkRequirements($dbType = '') {
 
 	return array(
 		'php' => $php ? 'ok' : 'ko',
-		'minz' => $minz ? 'ok' : 'ko',
 		'curl' => $curl ? 'ok' : 'ko',
 		'pdo-mysql' => $pdo_mysql ? 'ok' : 'ko',
 		'pdo-sqlite' => $pdo_sqlite ? 'ok' : 'ko',
@@ -69,7 +67,7 @@ function checkRequirements($dbType = '') {
 		'favicons' => $favicons ? 'ok' : 'ko',
 		'http_referer' => $http_referer ? 'ok' : 'ko',
 		'message' => $message ?: 'ok',
-		'all' => $php && $minz && $curl && $pdo && $pcre && $ctype && $dom && $xml &&
+		'all' => $php && $curl && $pdo && $pcre && $ctype && $dom && $xml &&
 		         $data && $cache && $users && $favicons && $http_referer && $message == '' ? 'ok' : 'ko'
 	);
 }