Remove unnecessary flowsources.Remote imports

Since `FlowSources` now re-exports `Remote`, these can be safely removed.

Author: egregius313

csharp/ql/src/experimental/CWE-099/TaintedWebClientLib.qll

@@ -1,7 +1,6 @@
 import csharp
 import semmle.code.csharp.frameworks.system.Net
 import semmle.code.csharp.frameworks.System
-import semmle.code.csharp.security.dataflow.flowsources.Remote
 import semmle.code.csharp.security.dataflow.flowsources.FlowSources
 import semmle.code.csharp.security.Sanitizers
 

csharp/ql/src/experimental/CWE-918/RequestForgery.qll

@@ -5,7 +5,6 @@ module RequestForgery {
   import semmle.code.csharp.frameworks.System
   import semmle.code.csharp.frameworks.system.Web
   import semmle.code.csharp.frameworks.Format
-  import semmle.code.csharp.security.dataflow.flowsources.Remote
   import semmle.code.csharp.security.dataflow.flowsources.FlowSources
 
   /**