Revert "Add what's the difference"

This reverts commit e567e59.

Author: dominicbetts

articles/iot-central/index.yml

@@ -41,9 +41,7 @@ landingContent:
           - text: Why should I start with IoT Central?
             url: core/concepts-faq-start-iot-central.md
           - text: What does it mean for IoT Central to have high availability, disaster recovery, and elastic scale?
-            url: core/concepts-faq-scalability-availability.md
-          - text: What's the difference between aPaaS and PaaS solution offerings?
-            url: ../iot-fundamentals/iot-solution-apaas-paas.md?toc=/azure/iot-central/toc.json&bc=/azure/iot-central/breadcrumb/toc.json
+            url: core/concepts-scalability-availability.md
           - text: How do I move between aPaaS and PaaS solution approaches?
             url: core/concepts-faq-apaas-paas.md
           - text: How do I extend IoT Central if it's missing something I need?

articles/iot-fundamentals/iot-introduction.md

@@ -72,8 +72,6 @@ For an in-depth discussion of IoT architecture, see the [Microsoft Azure IoT Ref
 
 ## Next steps
 
-To learn about the different solution models and how you should get started, see [What's the difference between the aPaaS and PaaS solution offerings?](iot-solution-apaas-paas.md).
-
 For some actual business cases and the architecture used, see the [Microsoft Azure IoT Technical Case Studies](https://microsoft.github.io/techcasestudies/#technology=IoT&sortBy=featured).
 
 For some sample projects that you can try out with an IoT DevKit, see the [IoT DevKit Project Catalog](https://microsoft.github.io/azure-iot-developer-kit/docs/projects/). 

articles/iot-fundamentals/iot-solution-apaas-paas.md

@@ -4,8 +4,6 @@
   items:
   - name: Introduction
     href: iot-introduction.md
-  - name: aPaaS and PaaS solution offerings
-    href: iot-solution-apaas-paas.md
   - name: Choose the right IoT solution
     href: iot-solution-options.md
   - name: Azure IoT services and technologies