Change remove occurrences to delete to maintain consistency

- When an entry is being permanently deleted. Example: A contact, the success message, and the button label should use the keyword ‘Delete’.

What is changed:
- Form button name and labels
- From success message
- Some variable names

Author: sukhwinder33445

application/controllers/ContactGroupController.php

@@ -85,7 +85,7 @@ public function editAction(): void
                 if ($form->hasBeenRemoved()) {
                     $form->removeContactgroup();
                     Notification::success(sprintf(
-                        t('Successfully removed contact group %s'),
+                        t('Deleted contact group "%s" successfully'),
                         $form->getValue('group_name')
                     ));
                     $this->switchToSingleColumnLayout();

application/forms/ContactGroupForm.php

@@ -83,17 +83,17 @@ protected function assemble(): void
         );
 
         if ($this->contactgroupId) {
-            $removeBtn = new SubmitElement(
-                'remove',
+            $deleteBtn = new SubmitElement(
+                'delete',
                 [
-                    'label'             => $this->translate('Remove'),
+                    'label'             => $this->translate('Delete'),
                     'class'             => 'btn-remove',
                     'formnovalidate'    => true
                 ]
             );
 
-            $this->registerElement($removeBtn);
-            $this->getElement('submit')->prependWrapper((new HtmlDocument())->setHtmlContent($removeBtn));
+            $this->registerElement($deleteBtn);
+            $this->getElement('submit')->prependWrapper((new HtmlDocument())->setHtmlContent($deleteBtn));
         }
     }
 
@@ -107,7 +107,7 @@ public function hasBeenRemoved(): bool
         $btn = $this->getPressedSubmitElement();
         $csrf = $this->getElement('CSRFToken');
 
-        return $csrf !== null && $csrf->isValid() && $btn !== null && $btn->getName() === 'remove';
+        return $csrf !== null && $csrf->isValid() && $btn !== null && $btn->getName() === 'delete';
     }
 
     /**

application/forms/ScheduleForm.php

@@ -61,7 +61,7 @@ public function hasBeenRemoved(): bool
         $btn = $this->getPressedSubmitElement();
         $csrf = $this->getElement('CSRFToken');
 
-        return $csrf !== null && $csrf->isValid() && $btn !== null && $btn->getName() === 'remove';
+        return $csrf !== null && $csrf->isValid() && $btn !== null && $btn->getName() === 'delete';
     }
 
     public function loadSchedule(int $id): void
@@ -164,8 +164,8 @@ protected function assemble()
         ]);
 
         if ($this->showRemoveButton) {
-            $removeBtn = $this->createElement('submit', 'remove', [
-                'label' => $this->translate('Remove'),
+            $removeBtn = $this->createElement('submit', 'delete', [
+                'label' => $this->translate('Delete'),
                 'class' => 'btn-remove',
                 'formnovalidate' => true
             ]);