tree: remove some usages of the report_memleaks INI setting (#19407)

Zend/tests/bug67368.phpt

@@ -1,7 +1,5 @@
 --TEST--
 Bug #67368 (Memory leak with immediately dereferenced array in class constant)
---INI--
-report_memleaks=1
 --FILE--
 <?php
 class FooBar {

Zend/tests/bug81104.phpt

@@ -2,7 +2,6 @@
 Bug #81104: Warning: "Failed to set memory limit to ... bytes" emitted after exit in debug
 --INI--
 memory_limit=5M
-report_memleaks=0
 --FILE--
 <?php
 #[AllowDynamicProperties]

Zend/tests/exceptions/bug26698.phpt

@@ -3,8 +3,6 @@ Bug #26698 (Thrown exceptions while evaluating argument to pass as parameter cra
 --FILE--
 <?php
 
-ini_set("report_memleaks", 0);  // the exception thrown in this test results in a memory leak, which is fine
-
 class ObjectOne
 {
     function getNone()

ext/standard/tests/file/parse_ini_file_variation3.phpt

@@ -35,7 +35,6 @@ display_startup_errors = Off
 log_errors = Off
 ignore_repeated_errors = Off
 ignore_repeated_source = Off
-report_memleaks = On
 docref_root = "/phpmanual/"
 docref_ext = .html
 
@@ -68,7 +67,7 @@ foreach($newdirs as $newdir) {
 --EXPECTF--
 *** Testing parse_ini_file() : variation ***
 New include path is : %sparse_ini_file_variation3.dir1%sparse_ini_file_variation3.dir2%sparse_ini_file_variation3.dir3%S
-array(9) {
+array(8) {
   ["error_reporting"]=>
   string(5) "30719"
   ["display_errors"]=>
@@ -81,8 +80,6 @@ array(9) {
   string(0) ""
   ["ignore_repeated_source"]=>
   string(0) ""
-  ["report_memleaks"]=>
-  string(1) "1"
   ["docref_root"]=>
   string(11) "/phpmanual/"
   ["docref_ext"]=>

ext/standard/tests/serialize/unserialize_mem_leak.phpt

@@ -1,7 +1,5 @@
 --TEST--
 Memleaks if unserialize return a self-referenced array/object
---INI--
-report_memleaks=1
 --FILE--
 <?php
 function foo() {