fix(styles) - cleanup unused functions/mixins

[Shashika6]

Fixes https://github.com/international-labour-organization/designsystem/issues/966

Notes :-

• Currently there are a few unused functions/mixins which needs to be cleaned up.

Removed

Animations

• N/A

Functions

• Encode color

Mixins

• Vertical align
• Horizontal align
• Vertical horizontal align
• Ellipsis
• Spacing values
• Icon button

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🦋 Changeset detected

Latest commit: c80b5ea55166b55bb4cf7e13ff39bd6aeb09819c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

| Name | Type | | --------------- | ----- | | @ilo-org/styles | Patch | | @ilo-org/react | Patch | | @ilo-org/twig | Patch |

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