hyper-upgrade: remove --upgrade-to-rhv option

It might create a confusion to users or even jump upgrade
versions required.

man/ovirt-engine-hyper-upgrade.8

@@ -3,7 +3,6 @@
 ovirt-engine-hyper-upgrade \- A tool to help users upgrade RHV Manager (RHVM)
 .SH SYNOPSIS
 ovirt-engine-hyper-upgrade.py [-h] [--backup] [--backup-dir BACKUP_DIR]
-                                  [--upgrade-to-rhv UPGRADE_TO_RHV]
 
 .SH DESCRIPTION
 The \fBovit-engine-hyper-upgrade\fP is a wrapper tool to automate RHV Manager upgrades.
@@ -36,10 +35,6 @@ Execute engine-backup before the upgrade
 Directory where the engine-backup will save the backup file.
 If not provided, it will use /tmp
 
-.TP
-.B --upgrade-to-rhv
-Upgrade to specifc version of RHV
-
 .SH LOGGING
 See \fB/var/log/ovirt-engine/engine-hyper-upgrade.log
 
@@ -51,12 +46,12 @@ Upgrade through latest version, backup won't be created
 
 Upgrade to version 4.1 creating a backup from engine, backup will be saved in /backup
 .br
-# ovirt-engine-hyper-upgrade --backup --backup-dir=/backup --upgrade-to-rhv=4.1
+# ovirt-engine-hyper-upgrade --backup --backup-dir=/backup
 .br
 
-Upgrade to version 4.1, backup won't created
+Upgrade only, backup won't created
 .br
-# ovirt-engine-hyper-upgrade --upgrade-to-rhv=4.1
+# ovirt-engine-hyper-upgrade
 .br
 
 .SH BUGS

src/ovirt-engine-hyper-upgrade

@@ -496,12 +496,6 @@ def main():
              'If not provided, it will use /tmp',
     )
 
-    parser.add_argument(
-        '--upgrade-to-rhv',
-        nargs=1,
-        help='Upgrade to specifc version of RHV',
-    )
-
     logger.debug('----------------------')
     logger.debug('Starting')
     logger.debug('----------------------')
@@ -525,10 +519,7 @@ def main():
 
     u = UpgradeHelper()
     for release in CHECK_RELEASES['repos']:
-        if args.upgrade_to_rhv is None:
-            version = u.detect_major_version_engine()
-        else:
-            version = ' '.join(args.upgrade_to_rhv)
+        version = u.detect_major_version_engine()
 
         if release['version'] == version:
             upgrade_supported = True