remove a bunch of repeated words

csharp/ql/lib/semmle/code/csharp/controlflow/internal/ControlFlowGraphImpl.qll

@@ -335,7 +335,7 @@ module Expressions {
       // ```csharp
       // new Dictionary<int, string>() { [0] = "Zero", [1] = "One", [2] = "Two" }
       // ```
-      // need special treatment, because the the accesses `[0]`, `[1]`, and `[2]`
+      // need special treatment, because the accesses `[0]`, `[1]`, and `[2]`
       // have no qualifier.
       this = any(MemberInitializer mi).getLValue()
     }

csharp/ql/src/Telemetry/ExternalApi.qll

@@ -85,7 +85,7 @@ class ExternalApi extends DotNet::Callable {
     defaultAdditionalTaintStep(this.getAnInput(), _)
   }
 
-  /** Holds if this API is is a constructor without parameters. */
+  /** Holds if this API is a constructor without parameters. */
   private predicate isParameterlessConstructor() {
     this instanceof Constructor and this.getNumberOfParameters() = 0
   }