do not set engine.WarnInterpreterOnly - Truffle doesn't allow setting engine options when using a shared engine

(cherry picked from commit 4956b47)

Author: tomasstupka

graalpython/org.graalvm.python.embedding/src/org/graalvm/python/embedding/utils/GraalPyResources.java

@@ -356,9 +356,6 @@ private static Context.Builder createContextBuilder() {
                         // Force to automatically import site.py module, to make Python packages
                         // available
                         option("python.ForceImportSite", "true").
-                        // Do not warn if running without JIT. This can be desirable for short
-                        // running scripts to reduce memory footprint.
-                        option("engine.WarnInterpreterOnly", "false").
                         // causes the interpreter to always assume hash-based pycs are valid
                         option("python.CheckHashPycsMode", "never");
     }