WIP: remove unnecessary dependencies

[jameslamb]

Proposing some small maintenance updates, things I noticed today while trying to get more familiar with this project.

• removes libcuvs build dependencies like CMake, Ninja, and a bunch of CUDA toolkit libraries (we're not building libcuvs here, and the libcuvs conda package will pull in the runtime packages it needs)
• minor stylistic changes to dependencies.yaml (clarifying naming, standardizing spelling of lists)

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[jameslamb]

/ok to test

[narangvivek10]

Hey @jameslamb, just so that you know, we currently need libcuvs, cmake, and ninja for building cuvs-java (please see #43 for context). We use cuvs-java as a dependency for cuvs-lucene. Once cuvs-java nightly snapshots are set up, I will simplify the build process, and then these won't be needed anymore. Please let me know if any questions. Thanks!

[jameslamb]

Ah thanks, sorry I'd missed that the build here works by cloning the cuvs repo:

cuvs-lucene/build.sh

Lines 29 to 32 in 3efd0ff

	git clone --branch "$BRANCH" $CUVS_GIT_REPO $CUVS_WORKDIR
	pushd $CUVS_WORKDIR
	fi
	./build.sh java

I'll change the direction of this PR with a different suggestion... I think it should be possible to list the build dependencies of cuvs-java programmatically, without needing to hard-code them again here. That should reduce the risk of drift and make it easier for this repo to stay in sync with changes to cuVS.