Revert unneeded changes from "Fixes for nested multipliers (#59)"

This partially reverts commit 39725d3,
only keeping the part relevant for nested support and a PHPUnit deprecation fix.

The commit introduced a regression in `testGroupManualRenderWithButtons`
so this will minimize the changes that could affect it.

- Latte 2 macros are trivial to migrate and unclearly named, no need to keep them for BC.
- The onSuccess handlers were already fixed in ed96ba0.
- `testGroupManualRenderWithButtons` look like remnants of debugging effort, they do not fix the test.

For reference, the reverted change is the following commit that was squashed
into 39725d3, except for the change to `testSendNested`:
2c33de2

src/Latte/Extension/MultiplierExtension.php

@@ -20,8 +20,6 @@ public function getTags(): array
 			'n:multiplier' => [MultiplierNode::class, 'create'],
 			'multiplier:remove' => [MultiplierRemoveNode::class, 'create'],
 			'multiplier:add' => [MultiplierAddNode::class, 'create'],
-			'btnRemove' => [MultiplierRemoveNode::class, 'create'],
-			'btnCreate' => [MultiplierAddNode::class, 'create'],
 		];
 	}
 

tests/Unit/CreateButtonTest.php

@@ -94,11 +94,7 @@ public function testCallback()
 				$submitter->setHtmlAttribute('class', 'add-btn');
 			});
 
-		$response = $this->services->form->createRequest($factory
-			->formModifier(function (\Nette\Application\UI\Form $form) {
-				$form->onSuccess[] = $form->onError[] = $form->onSubmit[] = function () {
-				};
-			})->createForm())->setPost([
+		$response = $this->services->form->createRequest($factory->createForm())->setPost([
 			'm' => [
 				['bar' => ''],
 				['bar' => ''],

tests/Unit/MultiplierTest.php

@@ -49,10 +49,6 @@ public function testSendBase()
 						$this->parameters['onCreate'][] = $container;
 					};
 				})
-				->formModifier(function (Form $form) {
-					$form->onSuccess[] = $form->onError[] = $form->onSubmit[] = function () {
-					};
-				})
 				->createForm()
 		)
 			->setPost($params = [
@@ -102,10 +98,6 @@ public function testSendCopy2()
 						$this->parameters['onCreate'][] = $container;
 					};
 				})
-				->formModifier(function (Form $form) {
-					$form->onSuccess[] = $form->onError[] = $form->onSubmit[] = function () {
-					};
-				})
 				->createForm()
 		)
 			->setPost($params = [
@@ -156,10 +148,6 @@ public function testSendMaxCopy()
 						$this->parameters['onCreate'][] = $container;
 					};
 				})
-				->formModifier(function (Form $form) {
-					$form->onSuccess[] = $form->onError[] = $form->onSubmit[] = function () {
-					};
-				})
 				->createForm()
 		)
 			->setPost([
@@ -226,10 +214,6 @@ public function testSendNested()
 					}));
 					$container['m2']->addCreateButton('create');
 				})
-				->formModifier(function (Form $form) {
-					$form->onSuccess[] = $form->onError[] = $form->onSubmit[] = function () {
-					};
-				})
 				->createForm()
 		);
 		$request->setPost([
@@ -396,15 +380,14 @@ public function testGroupManualRenderWithButtons()
 			->multiplierModifier(function (Multiplier $multiplier) {
 				$multiplier->onCreate[] = function (Container $container) {
 					$this->parameters['onCreate'][] = $container;
-					$container->setParent(null, 'X');
-					//var_dump($container);
 				};
 				$multiplier->addCreateButton();
 				$multiplier->addRemoveButton();
-				//$multiplier->setMinCopies(1);
+				$multiplier->setMinCopies(1);
 			})
 			->createForm());
 		$dom = $request->render(__DIR__ . '/templates/group.latte')->toDomQuery();
+
 		$this->assertDomHas($dom, 'input[name="m[0][multiplier_remover]"]');
 		$this->assertDomHas($dom, 'input[name="m[1][multiplier_remover]"]');
 	}
@@ -473,10 +456,6 @@ public function testPromptSelect()
 						->setPrompt('Select');
 				})
 				->addCreateButton()
-				->formModifier(function (Form $form) {
-					$form->onSuccess[] = $form->onError[] = $form->onSubmit[] = function () {
-					};
-				})
 				->createForm()
 		)
 			->setPost($params = [

tests/Unit/RemoveButtonTest.php

@@ -193,10 +193,6 @@ public function testAddClass()
 					$submitter->setHtmlAttribute('class', 'btn btn-remove');
 				})
 				->addCreateButton()
-				->formModifier(function (Form $form) {
-					$form->onSuccess[] = $form->onError[] = $form->onSubmit[] = function () {
-					};
-				})
 				->createForm()
 		)->setPost([
 			'm' => [
@@ -219,10 +215,6 @@ public function testDeleteLastElementToZero()
 				->setMinCopies(0)
 				->addRemoveButton()
 				->addCreateButton()
-				->formModifier(function (Form $form) {
-					$form->onSuccess[] = $form->onError[] = $form->onSubmit[] = function () {
-					};
-				})
 				->createForm()
 		)->modifyForm(function (Form $form) {
 			$form['m']->setValues([
@@ -252,10 +244,6 @@ public function testOnRemoveEvent()
 						$called = true;
 					};
 				})
-				->formModifier(function (Form $form) {
-					$form->onSuccess[] = $form->onError[] = $form->onSubmit[] = function () {
-					};
-				})
 				->createForm()
 		)->setPost([
 			'm' => [