fix(Cloud-Databases): Revert "Add version validation (#5791)"

[lornakelly]

This reverts commit f542550.

Community Note

• Please vote on this pull request by adding a 👍 reaction to the original pull request comment to help the community and maintainers prioritize this request
• Please do not leave "+1" or other comments that do not add relevant new information or questions, they generate extra noise for pull request followers and do not help prioritize the request

Relates OR Closes #0000

Reverts this PR that is causing issues
#5791

Output from acceptance testing:

$  make testacc TEST=./ibm/service/database TESTARGS='-run=TestAccIBMDatabaseInstance_Redis_Basic'
=== RUN   TestAccIBMDatabaseInstance_Redis_Basic
=== PAUSE TestAccIBMDatabaseInstance_Redis_Basic
=== CONT  TestAccIBMDatabaseInstance_Redis_Basic
--- PASS: TestAccIBMDatabaseInstance_Redis_Basic (1242.09s)
PASS
ok      github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/database        1245.936s

[omaraibrahim]

LGTM