Remove old samples (#172)

## Purpose
Remove old and redundant samples including samples that would only work
with previous versions old Azure IoT Operations and samples that have
been superseded by samples or tools in SDK repository.

## Does this introduce a breaking change?
<!-- Mark one with an "x". -->
```
[x] Yes
[ ] No
```

## Pull Request Type
What kind of change does this Pull Request introduce?

<!-- Please check the one that applies to this PR using "x". -->
```
[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[x] Other... Please describe: REmoving old and redundant samples, scripts, and tools.
```

Author: dominicbetts

README.md

@@ -8,7 +8,6 @@ This project provides the following:
 
 * Pre-configured codespace with [K3s](https://k3s.io/) cluster via [K3d](https://k3d.io/)
 * MQTT Device Simulator
-* HTTP & GRPC Callout Server
 
 > [!IMPORTANT]
 > Codespaces are easy to setup quickly and tear down later, but they're not suitable for performance evaluation or scale testing. For those scenarios, use a validated environment from the official documentation.

docs/ORGANIZATION.md

@@ -5,27 +5,17 @@
 Explore IoT Operations is a collection of tools and samples for customers of Azure IoT Operations. To keep the project understandable and extensible to future additions, the following conventions should be followed for repository structure.
 
 ```
-├── lib/
-│   ├── library1/
-│   ├── ...
-│   ├── libraryN/
 ├── samples/
 │   ├── sample1/
 │   ├── ...
 │   ├── sampleN/
-├── scripts/
 ├── tutorials/
 └── README.md
 ```
 
-**Libraries** (`./lib`) are shared between multiple tools or samples.
-
 **Samples** (`./samples`) are tools or code samples which can be written in any language. They should be given a descriptive name which adequately describes their purpose, and should include some level of documentation regarding their usage.
-
-**Scripts** (`./scripts`) are bash scripts smaller than a tool or sample which are in some way used for setup.
-
 **Tutorials** (`./tutorials`) are collections of code and documentation which are used together to provide a step-by-step walkthrough to demonstrate the capabilities of some feature of Azure IoT Operations. These typically serve a more narrow scope than that of a tool or code sample, designed to exercise specific facets of Azure IoT Operations.
 
 ## Linting, Formatting, and Testing Requirements
 
-Linting, formatting, and testing are not required but are highly recommended. The mage library under `./lib/mage` is provided for golang projects and offers some basic commands for linting, formatting, building, testing, and assuring test coverage bars. Comments describe each function within the library. See `./samples/industrial-data-simulator/mage.go` for an example of how this library is used.
+Linting, formatting, and testing are not required but are highly recommended.