Remove IsRunningOnIOS9OrLater() check from omnibox_text_field_ios

ios/chrome/browser/ui/omnibox/omnibox_text_field_ios.mm

Index: ios/chrome/browser/ui/omnibox/omnibox_text_field_ios.mm
diff --git a/ios/chrome/browser/ui/omnibox/omnibox_text_field_ios.mm b/ios/chrome/browser/ui/omnibox/omnibox_text_field_ios.mm
index d449366364a691180f361af28c0f90a964b41573..659afd722f593a54d9c8197a221c69bf4f12aebe 100644
--- a/ios/chrome/browser/ui/omnibox/omnibox_text_field_ios.mm
+++ b/ios/chrome/browser/ui/omnibox/omnibox_text_field_ios.mm
@@ -7,7 +7,6 @@
 #import <CoreText/CoreText.h>
 
 #include "base/command_line.h"
-#include "base/ios/ios_util.h"
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/objc_property_releaser.h"
@@ -278,7 +277,7 @@ NSString* const kOmniboxFadeAnimationKey = @"OmniboxFadeAnimation";
 }
 
 - (NSTextAlignment)bestTextAlignment {
-  if (!base::ios::IsRunningOnIOS9OrLater() || [self isFirstResponder]) {
+  if ([self isFirstResponder]) {
     return [self bestAlignmentForText:[self text]];
   }
   return NSTextAlignmentNatural;