Remove unconditional assert from addNativeTracingHooks. Do nothing instead.

Summary:
This line was and apparently has always been triggered from the
HermesExecutorFactory. We just didn't notice because we didn't build with
assertions.

Changelog: [Internal] Don't crash on load when assertions and Hermes are enabled

Reviewed By: dulinriley

Differential Revision: D20163138

fbshipit-source-id: af672bb51eeb1833f3e27ad9a00921731c345fc5

ReactAndroid/src/main/java/com/facebook/hermes/reactexecutor/JSITracing.cpp

@@ -10,7 +10,7 @@
 namespace facebook {
 namespace jsi {
 void addNativeTracingHooks(Runtime &rt) {
-  assert(false && "unimplemented");
+  // Unimplemented
 }
 } // namespace jsi
 } // namespace facebook