Controller/Adminhtml/FastlyCdn/CustomSnippet/DeleteCustomSnippet.php
public function execute()
    {
        $result = $this->resultJson->create();

        try {
            $activeVersion = $this->getRequest()->getParam('active_version');
            $snippet = $this->getRequest()->getParam('snippet_id');
            $activateVcl = $this->getRequest()->getParam('activate_flag');
            $service = $this->api->checkServiceDetails();
            $this->vcl->checkCurrentVersionActive($service->versions, $activeVersion);
            $currActiveVersion = $this->vcl->getCurrentVersion($service->versions);

            $write = $this->filesystem->getDirectoryWrite(DirectoryList::VAR_DIR);
            $snippetPath = $write->getRelativePath(Config::CUSTOM_SNIPPET_PATH . $snippet);

            $snippetName = explode('_', $snippet);
            $snippetName = explode('.', $snippetName[2]);

            $reqName = Config::FASTLY_MAGENTO_MODULE . '_' . $snippetName[0];
            $checkIfSnippetExist = $this->api->hasSnippet($activeVersion, $reqName);

            if ($checkIfSnippetExist) {
                $clone = $this->api->cloneVersion($currActiveVersion);
                $this->api->removeSnippet($clone->number, $reqName);
                $this->api->validateServiceVersion($clone->number);

                if ($activateVcl === 'true') {
                    $this->api->activateVersion($clone->number);
                }

                $comment = ['comment' => 'Magento Module deleted the ' . $reqName . ' custom snippet.'];
                $this->api->addComment($clone->number, $comment);
            }

            if ($write->isExist($snippetPath)) {
                $write->delete($snippetPath);
            }

            return $result->setData([
                'status'    => true
            ]);
        } catch (\Exception $e) {
            return $result->setData([
                'status'    => false,
                'msg'       => $e->getMessage()
            ]);
        }
    }
public function execute()
    {
        $result = $this->resultJson->create();

        try {
            $activeVersion = $this->getRequest()->getParam('active_version');
            $snippet = $this->getRequest()->getParam('snippet_id');
            $activateVcl = $this->getRequest()->getParam('activate_flag');
            $service = $this->api->checkServiceDetails();
            $this->vcl->checkCurrentVersionActive($service->versions, $activeVersion);
            $currActiveVersion = $this->vcl->getCurrentVersion($service->versions);

            $write = $this->filesystem->getDirectoryWrite(DirectoryList::VAR_DIR);
            $snippetPath = $write->getRelativePath(Config::CUSTOM_SNIPPET_PATH . $snippet);

            $snippetName = explode('_', $snippet);
            $snippetName = explode('.', $snippetName[2]);

            $reqName = Config::FASTLY_MAGENTO_MODULE . '_' . $snippetName[0];
            $checkIfSnippetExist = $this->api->hasSnippet($activeVersion, $reqName);

            if ($checkIfSnippetExist) {
                $clone = $this->api->cloneVersion($currActiveVersion);
                $this->api->removeSnippet($clone->number, $reqName);
                $this->api->validateServiceVersion($clone->number);

                if ($activateVcl === 'true') {
                    $this->api->activateVersion($clone->number);
                }

                $comment = ['comment' => 'Magento Module deleted the ' . $reqName . ' custom snippet.'];
                $this->api->addComment($clone->number, $comment);
            }

            if ($write->isExist($snippetPath)) {
                $write->delete($snippetPath);
            }

            return $result->setData([
                'status'    => true
            ]);
        } catch (\Exception $e) {
            return $result->setData([
                'status'    => false,
                'msg'       => $e->getMessage()
            ]);
        }
    }
Deletes the specified custom snippet VCL file

@return $this|\Magento\Framework\App\ResponseInterface|\Magento\Framework\Controller\ResultInterface