remove imports for dotnet (#11566)

Author: bruno-garcia

docs/platforms/dotnet/common/migration/index.mdx

@@ -398,8 +398,6 @@ Changed how to initialize Sentry:
 
 
 ```csharp
-using Sentry;
-
 // Initialize with DSN
 SentrySdk.Init("___PUBLIC_DSN___");
 
@@ -414,7 +412,6 @@ For ASP.NET (classic) integration, add `Sentry.AspNet` package and initialize it
 
 
 ```csharp
-using Sentry;
 using Sentry.AspNet;
 
 SentrySdk.Init(o =>

docs/platforms/dotnet/common/tracing/index.mdx

@@ -22,8 +22,6 @@ First, enable tracing and configure the sample rate for transactions. Set the sa
 The two options are meant to be mutually exclusive. If you set both, <PlatformIdentifier name="traces-sampler" /> will take precedence.
 
 ```csharp {diff}
-using Sentry;
-
 + // Add this to the SDK initialization callback
 + // Example uniform sample rate: capture 100% of transactions
 + options.TracesSampleRate = 1.0;

docs/platforms/dotnet/common/user-feedback/index.mdx

@@ -17,8 +17,6 @@ User Feedback for **[ASP.NET](/platforms/dotnet/guides/aspnet/user-feedback/#int
 You can create a form to collect the user input in your preferred framework, and use the SDK's API to send the information to Sentry. You can also use the widget, as described below. If you'd prefer an alternative to the widget or do not have a JavaScript frontend, you can use this API:
 
 ```csharp {tabTitle:C#}
-using Sentry;
-
 var eventId = SentrySdk.CaptureMessage("An event that will receive user feedback.");
 
 SentrySdk.CaptureUserFeedback(eventId, "[email protected]", "It broke.", "The User");

docs/platforms/dotnet/guides/aspnet/index.mdx

@@ -37,7 +37,6 @@ You configure the SDK in the `Global.asax.cs`:
 ```csharp {"onboardingOptions": {"performance": "21-24, 34-43"}}
 using System;
 using System.Web;
-using Sentry;
 using Sentry.AspNet;
 using Sentry.EntityFramework; // If you also installed Sentry.EntityFramework
 using Sentry.Extensibility;

docs/platforms/dotnet/guides/aspnet/tracing/included-instrumentation.mdx

@@ -18,7 +18,6 @@ using System;
 using System.Configuration;
 using System.Web.Mvc;
 using System.Web.Routing;
-using Sentry;
 using Sentry.AspNet;
 
 namespace AspNetMvc
@@ -87,7 +86,6 @@ Transactions created by this integration are automatically added to the current
 ```csharp
 using System;
 using System.Web.Mvc;
-using Sentry;
 
 public class HomeController : Controller
 {

docs/platforms/dotnet/guides/aspnetcore/tracing/instrumentation/automatic-instrumentation.mdx

@@ -32,7 +32,6 @@ Transactions created by this integration are automatically added to the current
 ```csharp
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Logging;
-using Sentry;
 
 public class HomeController : Controller
 {

docs/platforms/dotnet/guides/entityframework/index.mdx

@@ -48,7 +48,6 @@ For example, configuring an ASP.NET app with _global.asax_:
 ```csharp {filename:global.asax} {"onboardingOptions": {"performance": "16-18, 27-36"}}
 using System;
 using System.Configuration;
-using Sentry;
 using Sentry.AspNet;
 
 public class MvcApplication : System.Web.HttpApplication

docs/platforms/dotnet/guides/uwp/index.mdx

@@ -29,7 +29,6 @@ The SDK should be initialized in the constructor of your application class (usua
 
 
 ```csharp {"onboardingOptions": {"performance": "18-21"}}
-using Sentry;
 using Sentry.Protocol;
 using UnhandledExceptionEventArgs = Windows.UI.Xaml.UnhandledExceptionEventArgs;
 

docs/platforms/dotnet/guides/winforms/index.mdx

@@ -33,7 +33,6 @@ A complete example of the recommended startup is as follows:
 ```csharp {"onboardingOptions": {"performance": "32-35"}}
 using System;
 using System.Windows.Forms;
-using Sentry;
 
 namespace WindowsFormsApp1
 {

docs/platforms/dotnet/guides/winui/index.mdx

@@ -35,7 +35,6 @@ Select which Sentry features you'd like to install in addition to Error Monitori
 <OnboardingOptionButtons options={['error-monitoring', 'performance']}/>
 
 ```csharp {"onboardingOptions": {"performance": "17-20"}}
-using Sentry;
 using Sentry.Protocol;
 
 sealed partial class App : Application
@@ -82,7 +81,6 @@ Do not initialize the SDK in the `OnLaunched` event of the application or the `H
 
 ```csharp
 // Add these to your existing using statements.
-using Sentry;
 using Sentry.Protocol;
 using UnhandledExceptionEventArgs = Microsoft.UI.Xaml.UnhandledExceptionEventArgs;