chore: Drop dead private methods in /lib

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

lib/private/Files/Cache/Cache.php

@@ -563,19 +563,6 @@ class Cache implements ICache {
 		}
 	}
 
-	/**
-	 * Get all sub folders of a folder
-	 *
-	 * @param ICacheEntry $entry the cache entry of the folder to get the subfolders for
-	 * @return ICacheEntry[] the cache entries for the subfolders
-	 */
-	private function getSubFolders(ICacheEntry $entry) {
-		$children = $this->getFolderContentsById($entry->getId());
-		return array_filter($children, function ($child) {
-			return $child->getMimeType() == FileInfo::MIMETYPE_FOLDER;
-		});
-	}
-
 	/**
 	 * Remove all children of a folder
 	 *

lib/private/Repair/NC22/LookupServerSendCheck.php

@@ -45,15 +45,6 @@ class LookupServerSendCheck implements IRepairStep {
 		return 'Add background job to set the lookup server share state for users';
 	}
 
-	private function shouldRun(): bool {
-		$versionFromBeforeUpdate = $this->config->getSystemValueString('version', '0.0.0.0');
-
-		// was added to 22.0.0.3
-		return (version_compare($versionFromBeforeUpdate, '22.0.0.3', '<') && version_compare($versionFromBeforeUpdate, '22.0.0.0', '>='))
-			||
-			(version_compare($versionFromBeforeUpdate, '21.0.1.2', '<') && version_compare($versionFromBeforeUpdate, '21.0.0.0', '>'));
-	}
-
 	public function run(IOutput $output): void {
 		$this->jobList->add(LookupServerSendCheckBackgroundJob::class);
 	}

lib/private/Session/Internal.php

@@ -198,15 +198,6 @@ class Internal extends Session {
 		}
 	}
 
-	/**
-	 * @throws \Exception
-	 */
-	private function validateSession() {
-		if ($this->sessionClosed) {
-			throw new SessionNotAvailableException('Session has been closed - no further changes to the session are allowed');
-		}
-	}
-
 	/**
 	 * @param string $functionName the full session_* function name
 	 * @param array $parameters

lib/private/Session/Memory.php

@@ -30,7 +30,6 @@ declare(strict_types=1);
  */
 namespace OC\Session;
 
-use Exception;
 use OCP\Session\Exceptions\SessionNotAvailableException;
 
 /**
@@ -113,15 +112,4 @@ class Memory extends Session {
 		$this->sessionClosed = false;
 		return $reopened;
 	}
-
-	/**
-	 * In case the session has already been locked an exception will be thrown
-	 *
-	 * @throws Exception
-	 */
-	private function validateSession() {
-		if ($this->sessionClosed) {
-			throw new Exception('Session has been closed - no further changes to the session are allowed');
-		}
-	}
 }