Remove "Build custom Podman images" from README.md (#26)

This section is irrelevant, as the building the
images is a part of the Makefiles in the examples.
Also, the root Makefile was moved to utils, so
`make images`  is not a valid command anymore.

Signed-off-by: Stanislav Kosorin <stanokosorin4@gmail.com>

README.md

@@ -10,7 +10,6 @@ For more information about the project, please refer to the [final report](REPOR
   - [Installation](#installation)
     - [Prerequisites](#prerequisites)
     - [Install Python Dependencies](#install-python-dependencies)
-    - [Build Custom Podman Images](#build-custom-podman-images)
   - [Running examples](#running-examples)
 
 
@@ -24,9 +23,10 @@ For more information about the project, please refer to the [final report](REPOR
 - [P4 Compiler](https://github.com/p4lang/p4c) (v1.2.4.14)
 - [PI](https://github.com/p4lang/PI)
 - [Podman](https://podman.io/docs/installation) (v5.2.1)
+
 The versions mentioned above are the ones used during development. Newer versions may work, but have not been tested.
 
-We have provided [scripts](scripts) to install CRIU (with crit), the P4 compiler, PI, and Podman. The scripts have been tested on Ubuntu 22.04 and 24.04 and are not guaranteed to work on all machines. If you encounter any issues, please refer to the official documentation of the respective projects.
+We have provided [scripts](scripts) to install CRIU (with crit), the P4 compiler, PI, and Podman. The scripts have been tested on Ubuntu [22.04.4](https://releases.ubuntu.com/jammy/) and [24.04](https://releases.ubuntu.com/noble/) and are not guaranteed to work on all machines. If you encounter any issues, please refer to the official documentation of the respective projects.
 
 ### Install Python Dependencies
 ```bash
@@ -35,18 +35,6 @@ source .venv/bin/activate
 pip install -r requirements.txt
 ```
 
-### Build Custom Podman Images
-```bash
-make images
-```
-This will build the following images:
-- `tcp-client`: A simple TCP client that sends a message to a server (this will run in h1-pod)
-- `tcp-server`: A simple TCP server that listens for a message from a client (this will run in all other pods)
-
-You can configure the target IP of the client and the port of the server in the [tcp/Containerfile.server](tcp/Containerfile.server) and [tcp/Containerfile.client](tcp/Containerfile.client) files respectively.
-
-Furthermore, you can specify which image to run in the hosts by changing the `IMG` and `ARGS` variables in [scripts/switch_container/build.sh](scripts/switch_container/build.sh).
-
 ## Running examples
 There are three examples in the `examples` directory:
 - [process_migration](examples/process_migration): Process migration demo using network namespaces