JVM: refactor JvmDefaultMode, remove/rename some entries

- remove ENABLE/COMPATIBILITY because they can no longer be used
- remove forAllMethodsWithBody because its behavior is now equivalent to
  isEnabled
- inline isCompatibility
- inline DEFAULT
- rename ALL_INCOMPATIBLE -> ALL

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/jvmArguments.kt

@@ -75,16 +75,8 @@ fun CompilerConfiguration.setupJvmSpecificArguments(arguments: K2JVMCompilerArgu
         }
     }
 
-    val jvmDefaultMode = languageVersionSettings.getFlag(JvmAnalysisFlags.jvmDefaultMode)
     val jvmTarget = get(JVMConfigurationKeys.JVM_TARGET) ?: JvmTarget.DEFAULT
 
-    if (jvmDefaultMode == JvmDefaultMode.ENABLE || jvmDefaultMode == JvmDefaultMode.ENABLE_WITH_DEFAULT_IMPLS) {
-        messageCollector.report(
-            WARNING,
-            "'-Xjvm-default=${jvmDefaultMode.description}' is deprecated, please use '-Xjvm-default=all|all-compatibility'"
-        )
-    }
-
     val stringConcat = arguments.stringConcat
     if (stringConcat != null) {
         val runtimeStringConcat = JvmStringConcat.fromString(stringConcat)