Delete duplicated update btn on pull request view page (#19993)

Fix #19987

Author: lunny

templates/repo/issue/view_content/pull.tmpl

@@ -283,7 +283,7 @@
 					{{end}}
 				{{end}}
 
-				{{if (gt .Issue.PullRequest.CommitsBehind 0)}}
+				{{if and (gt .Issue.PullRequest.CommitsBehind 0) (not  .Issue.IsClosed) (not .Issue.PullRequest.IsChecking) (not .IsPullFilesConflicted) (not .IsPullRequestBroken) (not $canAutoMerge)}}
 					<div class="ui divider"></div>
 					<div class="item item-section">
 						<div class="item-section-left">
@@ -481,44 +481,6 @@
 				{{end}}
 			{{end}}
 
-			{{if and (gt .Issue.PullRequest.CommitsBehind 0) (not  .Issue.IsClosed) (not .Issue.PullRequest.IsChecking) (not .IsPullFilesConflicted) (not .IsPullRequestBroken) (not $canAutoMerge)}}
-				<div class="item df ac sb">
-					<div>
-						<i class="icon icon-octicon">{{svg "octicon-alert"}}</i>
-						{{$.i18n.Tr "repo.pulls.outdated_with_base_branch"}}
-					</div>
-					<div>
-						{{if and .UpdateAllowed .UpdateByRebaseAllowed }}
-							<div class="dib">
-								<div class="ui buttons update-button">
-									<button class="ui button" data-do="{{.Link}}/update" data-redirect="{{.Link}}">
-										<span class="button-text">
-											{{$.i18n.Tr "repo.pulls.update_branch"}}
-										</span>
-									</button>
-
-									<div class="ui dropdown icon button no-text">
-										{{svg "octicon-triangle-down" 14 "dropdown icon"}}
-										<div class="menu">
-											<div class="item active selected" data-do="{{.Link}}/update">{{$.i18n.Tr "repo.pulls.update_branch"}}</div>
-											<div class="item" data-do="{{.Link}}/update?style=rebase">{{$.i18n.Tr "repo.pulls.update_branch_rebase"}}</div>
-										</div>
-									</div>
-								</div>
-							</div>
-						{{end}}
-						{{if and .UpdateAllowed (not .UpdateByRebaseAllowed)}}
-							<form action="{{.Link}}/update" method="post">
-								{{.CsrfTokenHtml}}
-								<button class="ui compact button" data-do="update">
-									<span class="ui text">{{$.i18n.Tr "repo.pulls.update_branch"}}</span>
-								</button>
-							</form>
-						{{end}}
-					</div>
-				</div>
-			{{end}}
-
 			{{if $.StillCanManualMerge}}
 				<div class="ui divider"></div>
 				<div class="ui form manually-merged-fields" style="display: none">