Remove not existent function call

- Removes a not existent function call
- Removes a fallback for Windows

Signed-off-by: Lukas Reschke <lukas@statuscode.ch>

lib/private/Files/Storage/Local.php

@@ -155,7 +155,7 @@ class Local extends \OC\Files\Storage\Common {
 		$fullPath = $this->getSourcePath($path);
 		if (PHP_INT_SIZE === 4) {
 			$helper = new \OC\LargeFileHelper;
-			return $helper->getFilesize($fullPath);
+			return $helper->getFileSize($fullPath);
 		}
 		return filesize($fullPath);
 	}

lib/private/LargeFileHelper.php

@@ -51,7 +51,7 @@ class LargeFileHelper {
 	public function __construct() {
 		$pow_2_53 = floatval(self::POW_2_53_MINUS_1) + 1.0;
 		if ($this->formatUnsignedInteger($pow_2_53) !== self::POW_2_53) {
-			throw new \RunTimeException(
+			throw new \RuntimeException(
 				'This class assumes floats to be double precision or "better".'
 			);
 		}
@@ -98,10 +98,6 @@ class LargeFileHelper {
 		if (!is_null($fileSize)) {
 			return $fileSize;
 		}
-		$fileSize = $this->getFileSizeViaCOM($filename);
-		if (!is_null($fileSize)) {
-			return $fileSize;
-		}
 		$fileSize = $this->getFileSizeViaExec($filename);
 		if (!is_null($fileSize)) {
 			return $fileSize;
@@ -154,12 +150,6 @@ class LargeFileHelper {
 				$result = $this->exec("stat -c %s $arg");
 			} else if (strpos($os, 'bsd') !== false || strpos($os, 'darwin') !== false) {
 				$result = $this->exec("stat -f %z $arg");
-			} else if (strpos($os, 'win') !== false) {
-				$result = $this->exec("for %F in ($arg) do @echo %~zF");
-				if (is_null($result)) {
-					// PowerShell
-					$result = $this->exec("(Get-Item $arg).length");
-				}
 			}
 			return $result;
 		}