cleanup: Remove unnecessary @SuppressWarnings

Change-Id: Ie22ac47e315bff76f224214bc042fc483eb01550
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>

org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/GitServlet.java

@@ -138,7 +138,6 @@ public class GitServlet extends MetaServlet {
 	 *            the factory to construct and configure an {@link UploadPack}
 	 *            session when a fetch or clone is requested by a client.
 	 */
-	@SuppressWarnings("unchecked")
 	public void setUploadPackFactory(UploadPackFactory<HttpServletRequest> f) {
 		gitFilter.setUploadPackFactory(f);
 	}
@@ -158,7 +157,6 @@ public class GitServlet extends MetaServlet {
 	 *            the factory to construct and configure a {@link ReceivePack}
 	 *            session when a push is requested by a client.
 	 */
-	@SuppressWarnings("unchecked")
 	public void setReceivePackFactory(ReceivePackFactory<HttpServletRequest> f) {
 		gitFilter.setReceivePackFactory(f);
 	}

org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsBlockCache.java

@@ -524,7 +524,6 @@ public final class DfsBlockCache {
 		return true;
 	}
 
-	@SuppressWarnings("unchecked")
 	private <T> T scan(HashEntry n, DfsPackKey pack, long position) {
 		Ref<T> r = scanRef(n, pack, position);
 		return r != null ? r.get() : null;

org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsReader.java

@@ -541,7 +541,6 @@ final class DfsReader extends ObjectReader implements ObjectReuseAsIs {
 		}
 	}
 
-	@SuppressWarnings("unchecked")
 	public Collection<CachedPack> getCachedPacks() throws IOException {
 		DfsPackFile[] packList = db.getPacks();
 		List<CachedPack> cached = new ArrayList<CachedPack>(packList.length);

org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsRepositoryBuilder.java

@@ -120,7 +120,6 @@ public abstract class DfsRepositoryBuilder<B extends DfsRepositoryBuilder, R ext
 	 *             the repository could not be accessed to configure the rest of
 	 *             the builder's parameters.
 	 */
-	@SuppressWarnings("unchecked")
 	@Override
 	public abstract R build() throws IOException;