[M65 only] Fix cherry-picking mistake.

The cherry-pick for crug.com/809120 mistakenly included a BVC ivar that
was added after branch point.

Bug: none
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: Ifcb23b8d1f73deeef3ae3ec877e6916f1173882e
Reviewed-on: https://chromium-review.googlesource.com/942463
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/branch-heads/3325@{#635}
Cr-Branched-From: bc084a8b5afa3744a74927344e304c02ae54189f-refs/heads/master@{#530369}
diff --git a/ios/chrome/browser/ui/browser_view_controller.mm b/ios/chrome/browser/ui/browser_view_controller.mm
index 803e134..af80c9f 100644
--- a/ios/chrome/browser/ui/browser_view_controller.mm
+++ b/ios/chrome/browser/ui/browser_view_controller.mm
@@ -1005,8 +1005,6 @@
                                     withDispatcher:self.dispatcher];
     _inNewTabAnimation = NO;
 
-    _footerFullscreenProgress = 1.0;
-
     if (model && browserState)
       [self updateWithTabModel:model browserState:browserState];
   }