Remove unnecessary @since tags from non-API classes

Change-Id: I6bed174c062a0785641dc8ad69151bf7e843cdcf
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/JGitHostConfigEntry.java

@@ -54,7 +54,6 @@ import org.eclipse.jgit.annotations.NonNull;
  * lists of strings. The super class treats them as single strings containing
  * comma-separated lists.
  *
- * @since 5.2
  */
 public class JGitHostConfigEntry extends HostConfigEntry {
 

org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/JGitSshConfig.java

@@ -78,7 +78,6 @@ import org.eclipse.jgit.transport.SshConstants;
  * Therefore, this re-uses the parsing and caching from
  * {@link OpenSshConfigFile}.
  *
- * @since 5.2
  */
 public class JGitSshConfig implements HostConfigEntryResolver {
 

org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/RepeatingFilePasswordProvider.java

@@ -51,7 +51,6 @@ import org.apache.sshd.common.config.keys.FilePasswordProvider;
  * A {@link FilePasswordProvider} augmented to support repeatedly asking for
  * passwords.
  *
- * @since 5.2
  */
 public interface RepeatingFilePasswordProvider extends FilePasswordProvider {
 

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/GC.java

@@ -160,7 +160,6 @@ public class GC {
 	 *
 	 * @param e
 	 *            the executor to be used for running auto-gc
-	 * @since 4.8
 	 */
 	public static void setExecutor(ExecutorService e) {
 		executor = e;

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/ObjectDirectory.java

@@ -198,7 +198,6 @@ public class ObjectDirectory extends FileObjectDatabase {
 	 * <p>Getter for the field <code>packDirectory</code>.</p>
 	 *
 	 * @return the location of the <code>pack</code> directory.
-	 * @since 4.10
 	 */
 	public final File getPackDirectory() {
 		return packDirectory;

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/pack/PackWriter.java

@@ -642,7 +642,6 @@ public class PackWriter implements AutoCloseable {
 
 	/**
 	 * @param bytes exclude blobs of size greater than this
-	 * @since 5.0
 	 */
 	public void setFilterBlobLimit(long bytes) {
 		filterBlobLimit = bytes;

org.eclipse.jgit/src/org/eclipse/jgit/internal/transport/parser/FirstWant.java

@@ -67,7 +67,6 @@ import org.eclipse.jgit.internal.JGitText;
  * This class parses the input want line and holds the results: the actual want
  * line and the capabilities.
  *
- * @since 5.2
  */
 public class FirstWant {
 	private final String line;