Remove proxy impl for setHALInstrumentation.

* Calling of setHALInstrumentation on the proxy side will just forward the
  call to the server which turns on/off instrumentation of server side.

Bug:33923655
Test: make and test locally.
Change-Id: I4e74737ec65bd730cdbb30044387527fabcc4941
diff --git a/Interface.cpp b/Interface.cpp
index 77681d4..9fd8954 100644
--- a/Interface.cpp
+++ b/Interface.cpp
@@ -201,12 +201,6 @@
                         out << "return ::android::hardware::Void();\n";
                     }
                 },
-                {IMPL_PROXY,
-                    [](auto &out) {
-                        out << "configureInstrumentation();\n";
-                        out << "return ::android::hardware::Void();\n";
-                    }
-                },
                 {IMPL_STUB,
                     [](auto &out) {
                         out << "configureInstrumentation();\n";