ROPC fixes in VB files

[gewarren]

Replaces #10473.
Related to #10342.

• Delete unneeded connection strings.
• Delete some unsafe examples for older (System.Web) APIs.
• Delete PII from DataSource names in connection strings.
• Add project file where missing.

(Hide whitespace changes.)

[learn-build-service-prod]

Learn Build status updates of commit 8eba6e6:

✅ Validation status: passed

File	Status	Preview URL	Details
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcCommand/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcCommand/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcConnection.BeginTransaction/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcConnection.BeginTransaction/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcConnection.BeginTransaction1/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcConnection.BeginTransaction1/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcConnection.Close/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcConnection.Close/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcConnection/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcConnection/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.DeleteCommand/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.DeleteCommand/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.InsertCommand/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.InsertCommand/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.OdbcDataAdapter/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.OdbcDataAdapter/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.OdbcDataAdapter1/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.OdbcDataAdapter1/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.OdbcDataAdapter2/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.OdbcDataAdapter2/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.OdbcDataAdapter3/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.OdbcDataAdapter3/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.SelectCommand/VB/Project.vbproj	✅Succeeded
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.SelectCommand/VB/source.vb	✅Succeeded	View
snippets/visualbasic/VS_Snippets_ADO.NET/Classic WebData OdbcDataAdapter.UpdateCommand/VB/Project.vbproj	✅Succeeded

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[BillWagner]

This LGTM @gewarren

Impressive to have all this done and under our CI system. 🎆

Let's