Remove outdated references to Windows 8.x Store (dotnet#7376)

Author: stevemonaco

xml/System.IO.Pipes/PipeStream.xml

@@ -1557,7 +1557,7 @@ The pipe handle has not been set. (Did your <see cref="T:System.IO.Pipes.PipeStr
 
 ## Remarks
 
-The <xref:System.IO.Pipes.PipeStream.ReadAsync%2A> method enables you to perform resource-intensive I/O operations without blocking the main thread. This performance consideration is particularly important in a Windows 8.x Store app or desktop app where a time-consuming stream operation can block the UI thread and make your app appear as if it is not working. The async methods are used in conjunction with the `async` and `await` keywords in Visual Basic and C#.  
+The <xref:System.IO.Pipes.PipeStream.ReadAsync%2A> method enables you to perform resource-intensive I/O operations without blocking the main thread. This performance consideration is particularly important in applications where a time-consuming stream operation can block the UI thread and make your app appear as if it is not working. The async methods are used in conjunction with the `async` and `await` keywords in Visual Basic and C#.  
 
 Use the <xref:System.IO.Pipes.PipeStream.CanRead%2A> property to determine whether the current instance supports reading.  
 
@@ -1621,7 +1621,7 @@ The pipe handle has not been set. (Did your <see cref="T:System.IO.Pipes.PipeStr
 
 ## Remarks
 
-The <xref:System.IO.Pipes.PipeStream.ReadAsync%2A> method enables you to perform resource-intensive I/O operations without blocking the main thread. This performance consideration is particularly important in a Windows 8.x Store app or desktop app where a time-consuming stream operation can block the UI thread and make your app appear as if it is not working. The async methods are used in conjunction with the `async` and `await` keywords in Visual Basic and C#.
+The <xref:System.IO.Pipes.PipeStream.ReadAsync%2A> method enables you to perform resource-intensive I/O operations without blocking the main thread. This performance consideration is particularly important in applications where a time-consuming stream operation can block the UI thread and make your app appear as if it is not working. The async methods are used in conjunction with the `async` and `await` keywords in Visual Basic and C#.
 
 Use the <xref:System.IO.Pipes.PipeStream.CanRead%2A> property to determine whether the current instance supports reading.
 
@@ -2230,7 +2230,7 @@ The pipe handle has not been set. (Did your <see cref="T:System.IO.Pipes.PipeStr
 
 ## Remarks
 
-The <xref:System.IO.Pipes.PipeStream.WriteAsync%2A> method enables you to perform resource-intensive I/O operations without blocking the main thread. This performance consideration is particularly important in a Windows 8.x Store app or desktop app where a time-consuming stream operation can block the UI thread and make your app appear as if it is not working. The async methods are used in conjunction with the `async` and `await` keywords in Visual Basic and C#.
+The <xref:System.IO.Pipes.PipeStream.WriteAsync%2A> method enables you to perform resource-intensive I/O operations without blocking the main thread. This performance consideration is particularly important in applications where a time-consuming stream operation can block the UI thread and make your app appear as if it is not working. The async methods are used in conjunction with the `async` and `await` keywords in Visual Basic and C#.
 
 Use the <xref:System.IO.Pipes.PipeStream.CanWrite%2A> property to determine whether the current instance supports writing.
 
@@ -2295,7 +2295,7 @@ The pipe handle has not been set. (Did your <see cref="T:System.IO.Pipes.PipeStr
   
 ## Remarks  
 
-The <xref:System.IO.Pipes.PipeStream.WriteAsync%2A> method enables you to perform resource-intensive I/O operations without blocking the main thread. This performance consideration is particularly important in a Windows 8.x Store app or desktop app where a time-consuming stream operation can block the UI thread and make your app appear as if it is not working. The async methods are used in conjunction with the `async` and `await` keywords in Visual Basic and C#.
+The <xref:System.IO.Pipes.PipeStream.WriteAsync%2A> method enables you to perform resource-intensive I/O operations without blocking the main thread. This performance consideration is particularly important in applications where a time-consuming stream operation can block the UI thread and make your app appear as if it is not working. The async methods are used in conjunction with the `async` and `await` keywords in Visual Basic and C#.
 
 Use the <xref:System.IO.Pipes.PipeStream.CanWrite%2A> property to determine whether the current instance supports writing.