Docs remove rfcs

[laulpogan]

Turning RFC's back into a git-only thing

Checklist

• [X] The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• [X] Links to related issues (if applicable)
• [X] Tests for the changes have been added/updated (if applicable)
• [X] Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.
• [X] For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

[github-actions[bot]]

Unit Test Results (build & test)

633 tests  +12   629 :heavy_check_mark: +12   15m 39s :stopwatch: -1s 162 suites +  5       4 :zzz: ±  0  162 files   +  5       0 :x: ±  0 

Results for commit 9ac93c58. ± Comparison against base commit 8ff35b81.

This pull request removes 4 and adds 16 tests. Note that renamed tests count towards both.

com.datahub.authorization.ranger.RangerAuthorizerTest ‑ testAuthorizationAllow
com.datahub.authorization.ranger.RangerAuthorizerTest ‑ testAuthorizationDeny
com.datahub.authorizer.plugin.ranger.TestDataHubRangerAuthPlugin ‑ testLookupResource
com.datahub.authorizer.plugin.ranger.TestDataHubRangerAuthPlugin ‑ testValidateConfig

com.datahub.plugins.auth.TestConfig ‑ testConfig
com.datahub.plugins.auth.TestConfigProvider ‑ testConfigurationLoading
com.datahub.plugins.auth.TestConfigValidationUtils ‑ testListShouldNotBeEmpty
com.datahub.plugins.auth.TestConfigValidationUtils ‑ testListShouldNotHaveDuplicate
com.datahub.plugins.auth.TestConfigValidationUtils ‑ testMapShouldNotBeEmpty
com.datahub.plugins.auth.TestConfigValidationUtils ‑ testWhiteSpacesValidation
com.datahub.plugins.auth.TestIsolatedClassLoader ‑ testAuthenticatorPlugin
com.datahub.plugins.auth.TestIsolatedClassLoader ‑ testAuthorizerPlugin
com.datahub.plugins.auth.TestIsolatedClassLoader ‑ testDuplicatePluginName
com.datahub.plugins.auth.TestIsolatedClassLoader ‑ testIncorrectImplementation
…

:recycle: This comment has been updated with latest results.