Remove more Internet Explorer leftovers

site/content/docs/4.3/getting-started/browsers-devices.md

@@ -91,7 +91,7 @@ Similarly, the latest versions of most desktop browsers are supported.
 
 For Firefox, in addition to the latest normal stable release, we also support the latest [Extended Support Release (ESR)](https://www.mozilla.org/en-US/firefox/organizations/#faq) version of Firefox.
 
-Unofficially, Bootstrap should look and behave well enough in Chromium and Chrome for Linux, Firefox for Linux, and Internet Explorer 9, though they are not officially supported.
+Unofficially, Bootstrap should look and behave well enough in Chromium and Chrome for Linux, and Firefox for Linux, though they are not officially supported.
 
 ## Internet Explorer
 

site/content/docs/4.3/helpers/position.md

@@ -26,8 +26,6 @@ Position an element at the bottom of the viewport, from edge to edge. Be sure yo
 
 Position an element at the top of the viewport, from edge to edge, but only after you scroll past it. The `.sticky-top` utility uses CSS's `position: sticky`, which isn't fully supported in all browsers.
 
-**IE11 and IE10 will render `position: sticky` as `position: relative`.** As such, we wrap the styles in a `@supports` query, limiting the stickiness to only browsers that can render it properly.
-
 {{< highlight html >}}
 <div class="sticky-top">...</div>
 {{< /highlight >}}

site/layouts/partials/callout-warning-input-support.md

@@ -1,3 +1,3 @@
 ##### Date & color input support
 
-Keep in mind date inputs are [not fully supported](https://caniuse.com/#feat=input-datetime) by Internet Explorer and Safari. Color inputs also [lack support](https://caniuse.com/#feat=input-color) on Internet Explorer.
+Keep in mind date inputs are [not fully supported](https://caniuse.com/#feat=input-datetime) by all browsers, namely Safari.