Shared: remove cpp note

Author: Jami Cogswell

config/identical-files.json

@@ -599,7 +599,7 @@
     "python/ql/lib/semmle/python/security/internal/EncryptionKeySizes.qll",
     "java/ql/lib/semmle/code/java/security/internal/EncryptionKeySizes.qll"
   ],
-  "SharedModelValidation Java/C#/Go/JS/Python/Ruby/Swift (C++ is problematic for now)": [
+  "SharedModelValidation Java/C#/Go/JS/Python/Ruby/Swift": [
     "java/ql/lib/semmle/code/java/dataflow/SharedModelValidation.qll",
     "csharp/ql/lib/semmle/code/csharp/dataflow/SharedModelValidation.qll",
     "go/ql/lib/semmle/go/dataflow/SharedModelValidation.qll",