Remove false positives from searches

Author: stephentoub

src/libraries/System.Private.CoreLib/src/System/Text/DecoderReplacementFallback.cs

@@ -93,7 +93,7 @@ public DecoderReplacementFallbackBuffer(DecoderReplacementFallback fallback)
         public override bool Fallback(byte[] bytesUnknown, int index)
         {
             // We expect no previous fallback in our buffer
-            // We can't call recursively but others might (note, we don't test on last char!!!)
+            // We can't call recursively but others might (note, we don't test on last char!)
             if (_fallbackCount >= 1)
             {
                 ThrowLastBytesRecursive(bytesUnknown);

src/libraries/System.Threading.Tasks/tests/CancellationTokenTests.cs

@@ -861,7 +861,7 @@ public static void ODEWhenDisposingLinkedCTS()
                 }
                 else
                 {
-                    Assert.True(false, string.Format("Bug901737_ODEWhenDisposingLinkedCTS:  - Exception Occurred (not an ODE!!): " + ex));
+                    Assert.True(false, string.Format("Bug901737_ODEWhenDisposingLinkedCTS:  - Exception Occurred (not an ODE!): " + ex));
                 }
             }
         }