[Rust] Remove PrimitiveArrayOps

[asfimport]

It is no longer needed, now that we no longer have specialization.

Reporter: Jorge Leitão / @jorgecarleitao
Assignee: Jorge Leitão / @jorgecarleitao

PRs and other links:

• GitHub Pull Request #8512

_{Note: This issue was originally created as ARROW-10375. Please see the migration documentation for further details.}

[asfimport]

Jorge Leitão / @jorgecarleitao:
Issue resolved by pull request 8512
#8512