fix: storagesync model validation errors

[nschonni]

• Remove empty body
• Remove empty "properties"

[AutorestCI]

Automation for azure-sdk-for-python

Unable to detect any generation context from this PR.

[AutorestCI]

Automation for azure-sdk-for-go

Unable to detect any generation context from this PR.

[azuresdkci]

Can one of the admins verify this patch?

[lirenhe]

@nschonni , I saw a couple of validation error for this PR, could you take a look?

[nschonni]

@lirenhe I removed the spec changes so the model validation should be happy. When the spec doesn't get touched, the CI doesn't run the model validation, but the errors are still there

[openapi-sdkautomation]

In Testing, Please Ignore

[Logs] (Generated from 78dcf5c, Iteration 1)

.NET: test-repo-billy/azure-sdk-for-net [Logs] [Diff]

• No packages generated.

Python: test-repo-billy/azure-sdk-for-python [Logs] [Diff]

• azure-mgmt-storagesync [Logs] [Instructions] [Generation PR] [Integration PR]
  • azure-mgmt-storagesync-0.1.0.zip
  • azure_mgmt_storagesync-0.1.0-py2.py3-none-any.whl

Java: test-repo-billy/azure-sdk-for-java [Logs] [Diff]

• storagesync/resource-manager/v2019_02_01 [Logs] [Generation PR] [Integration PR]

Go: test-repo-billy/azure-sdk-for-go [Logs] [Diff]

• storagesync/mgmt/2018-04-02 [Logs]
• storagesync/mgmt/2018-07-01 [Logs]
• storagesync/mgmt/2018-10-01 [Logs]
• storagesync/mgmt/2019-02-01 [Logs]

JavaScript: test-repo-billy/azure-sdk-for-js [Logs] [Diff]

• @azure/arm-storagesync [Logs] [Instructions] [Generation PR] [Integration PR]
  • azure-arm-storagesync-7.0.0.tgz

[lirenhe]

@ankushbindlish2, please take a look at this PR.