[easy] we never created a param here

Summary:
This did not work. One can not create a param that depends on another param (dynamic!) value

```
infer --dynamic_dispatch
/Users/mityal/infer/infer/bin/infer: unknown option '--dynamic_dispatch'.
```

No info in the manual:
```
find . -name "*.txt" | xargs grep "dynamic"
```

Reviewed By: jvillard

Differential Revision: D17113568

fbshipit-source-id: 87d0a18ba

infer/src/base/Config.ml

@@ -3276,16 +3276,11 @@ let clang_frontend_action_string =
     ((if capture then ["translating"] else []) @ if linters then ["linting"] else [])
 
 
-let dynamic_dispatch =
+(* Specify treatment of dynamic dispatch in Java code: false 'none' treats dynamic dispatch as
-  CLOpt.mk_bool ~long:"dynamic-dispatch" ~default:biabduction
+   a call to unknown code and true triggers lazy dynamic dispatch. The latter mode follows the
-    "Specify treatment of dynamic dispatch in Java code: false 'none' treats dynamic dispatch as \
+   JVM semantics and creates procedure descriptions during symbolic execution using the type
-     a call to unknown code and true triggers lazy dynamic dispatch. The latter mode follows the \
+   information found in the abstract state *)
-     JVM semantics and creates procedure descriptions during symbolic execution using the type \
+let dynamic_dispatch = biabduction
-     information found in the abstract state"
-    ~in_help:InferCommand.[(Analyze, manual_java)]
-
-
-let dynamic_dispatch = !dynamic_dispatch
 
 let specs_library = !specs_library