Remove code for V1 and V2.

[fr33r]

Description

Removes the code responsible for supporting V1 / V2 of the package.

Rationale

With the introduction of V4, these versions are now in unsupported territory. These versions did not support Go modules, as well as critical features introduced in V3. In order to combat the growing code size of the repository, and to encourage consumers to leverage the latest version, V1 / V2 are being officially removed.

Suggested Version

N/A

Example Usage

N/A