Clean up of readme. Obsidian has been stable for a long time now, no breaking changes - removed the compatibility notes, as they referred to old versions (from today's perspective)

Author: SebastianMC

README-obsidian-versions-compatibility.md

@@ -1,5 +1,3 @@
-Obsidian versions compatibility info: [here](README-obsidian-versions-compatibility.md)
-
 > > This is a simple version of README which highlights the **basic scenario and most commonly used feature**
 >
 > The [long and much more detailed advanced-README.md is here](https://github.com/SebastianMC/obsidian-custom-sort/blob/master/docs/advanced-README.md)
@@ -241,4 +239,4 @@ We were considering a direct support of the Separators in the plugin. Eventually
 concise and smart CSS-snippet based solution, independent of the plugin. Go, see, copy to the CSS-snippets in Obsidian
 and enjoy the more grouped look
 
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