Remove jvmrunargs lookup and related code, update changelog (fixes apache#2726)

Author: ramanathan1504

log4j-core-test/src/test/resources/log4j2-test.xml

@@ -53,7 +53,6 @@ public class Interpolator extends AbstractConfigurationAwareLookup implements Lo
 
     private static final String LOOKUP_KEY_JNDI = "jndi";
 
-    private static final String LOOKUP_KEY_JVMRUNARGS = "jvmrunargs";
 
     private static final Logger LOGGER = StatusLogger.getLogger();
 
@@ -126,11 +125,6 @@ private void handleError(final String lookupKey, final Throwable t) {
                                 + " JNDI string lookups will not be available, continuing configuration. Ignoring "
                                 + t);
                 break;
-            case LOOKUP_KEY_JVMRUNARGS:
-                // java.lang.VerifyError: org/apache/logging/log4j/core/lookup/JmxRuntimeInputArgumentsLookup
-                LOGGER.warn("JMX runtime input lookup class is not available because this JRE does not support JMX. "
-                        + "JMX lookups will not be available, continuing configuration. Ignoring " + t);
-                break;
             case LOOKUP_KEY_WEB:
                 LOGGER.info("Log4j appears to be running in a Servlet environment, but there's no log4j-web module "
                         + "available. If you want better web container support, please add the log4j-web JAR to your "

log4j-core/src/main/java/org/apache/logging/log4j/core/lookup/Interpolator.java

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<entry xmlns="https://logging.apache.org/xml/ns"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="
+           https://logging.apache.org/xml/ns
+           https://logging.apache.org/xml/ns/log4j-changelog-0.xsd"
+       type="removed">
+    <issue id="3874" link="https://github.com/apache/logging-log4j2/issues/3874"/>
+    <description format="asciidoc">
+      Removed the `jvmrunargs` lookup and related code due to lack of clear use case and potential for confusion.
+    </description>
+</entry>