DOC: Remove `<component> v:` from the version selector

[leofang]

Ex:

cuda-python/cuda_bindings/docs/source/_templates/sidebar/variant-selector.html

Lines 3 to 4 in c71ed39

	<span class="fa fa-book"> cuda-bindings</span>
	v: <span id="currentVersion">{{ version }}</span>

Although this would be moot once we switch to the NV theme (#216), which has the built-in version selector support and does not need this hack.