LfsConnectionFactoryTest: remove unnecessary cast

Change-Id: I08ed51b13aa269a4f6b64ac723b6bd7649c6591c

org.eclipse.jgit.lfs.test/META-INF/MANIFEST.MF

@@ -10,6 +10,7 @@ Bundle-RequiredExecutionEnvironment: JavaSE-11
 Import-Package: org.eclipse.jgit.api;version="[6.10.1,6.11.0)",
  org.eclipse.jgit.attributes;version="[6.10.1,6.11.0)",
  org.eclipse.jgit.internal.storage.dfs;version="[6.10.1,6.11.0)",
+ org.eclipse.jgit.internal.storage.file;version="[6.10.1,6.11.0)",
  org.eclipse.jgit.junit;version="[6.10.1,6.11.0)",
  org.eclipse.jgit.lfs;version="[6.10.1,6.11.0)",
  org.eclipse.jgit.lfs.errors;version="[6.10.1,6.11.0)",

org.eclipse.jgit.lfs.test/tst/org/eclipse/jgit/lfs/internal/LfsConnectionFactoryTest.java

@@ -97,7 +97,8 @@ public void lfsUrlFromRemoteUrlWithoutDotGit() throws Exception {
 	public void lfsUrlFromLocalConfig() throws Exception {
 		addRemoteUrl("https://localhost/repo");
 
-		StoredConfig cfg = ((Repository) db).getConfig();
+		@SuppressWarnings("restriction")
+		StoredConfig cfg = db.getConfig();
 		cfg.setString(ConfigConstants.CONFIG_SECTION_LFS,
 				null,
 				ConfigConstants.CONFIG_KEY_URL,
@@ -111,7 +112,8 @@ public void lfsUrlFromLocalConfig() throws Exception {
 	public void lfsUrlFromOriginConfig() throws Exception {
 		addRemoteUrl("https://localhost/repo");
 
-		StoredConfig cfg = ((Repository) db).getConfig();
+		@SuppressWarnings("restriction")
+		StoredConfig cfg = db.getConfig();
 		cfg.setString(ConfigConstants.CONFIG_SECTION_LFS,
 				org.eclipse.jgit.lib.Constants.DEFAULT_REMOTE_NAME,
 				ConfigConstants.CONFIG_KEY_URL,