Only support 64 bit architecture

[kealan]

Goal

In order to simplify the project it is proposed to only build and test
for 64 bit architectures. The code that refers to 32 bit and 16 bit will
be removed.

Resources

Acceptance criteria

1. Code is commented
2. Tests pass with more than 80% test coverage
3. Static analysis should pass
4. Code should be reviewed by two engineers

[giorgiozoppi]

@kealan commented code in the repo is bad pratice. I would rather prefer to remove the code that it's not related. I would rather tag (i.e. LAST_SUPPORT_32_BIT) and then remove all the code will no longer supported. Today i am in Dublin at we work docklands, if you wanna meet and test.

[kealan]

Hi Giorgio That is a fair point. I will just remove the code.

[giorgiozoppi]

Have you closed this? Is there any PR? How can I help here?