remove links to macOS and Linux SDKs

_posts/2017-06-01-release-1706-linux-sdk.md

@@ -16,9 +16,7 @@ environment on Windows]({{ "/notes/windowsdev/" | prepend: site.baseurl | prepen
 to hack Shotcut. As part of that, we created a Windows SDK that bundles together
 most of Shotcut's dependencies as well as special build of Qt 5 that still
 includes QtWebKit. These requirements still make development on Linux
-troublesome for new or casual contributors. So, we have added a [Linux SDK
-]({{ "/notes/linuxdev/" | prepend: site.baseurl | prepend: site.url }})
-as well with setup instructions for Qt Creator.
+troublesome for new or casual contributors.
 
 Lastly, I want to remind readers of the [video instruction course by James Woo
 ](https://gumroad.com/a/864284499/tixrdc).

_posts/2018-11-13-new-release-181113.md

@@ -35,7 +35,6 @@ alt="Screenshot of the New Project view, Advanced button for Export, and Use har
 - Added **Settings > Video Mode > Non-Broadcast > Square 1080p 30 fps** and 60 fps.
 - Added **Ut Video** presets to **Export**.
 - Added signed app bundle for macOS.
-- Added [SDK for macOS]({{ "/notes/macosdev/"  | prepend: site.baseurl | prepend: site.url }}).
 
 ### Fixes
 

howtos/contribute/index.md

@@ -75,9 +75,7 @@ some SDKs with setup instructions. Of course, you are free to try to work on
 the Shotcut code another way, but there is no help provided for that as it gets
 very complicated quickly.
 
-[How To Use the Linux SDK]({{ "/notes/linuxdev/" | prepend: site.baseurl }})  
 [How To Use the Windows SDK]({{ "/notes/windowsdev/" | prepend: site.baseurl }})  
-[How To Use the macOS SDK]({{ "/notes/macosdev/" | prepend: site.baseurl }})
 
 All code contributions should assign copyright to Meltytech, LLC; however,
 exceptions may be considered for a major contribution.