Replace Throwables.propagate with equivalent "throw e" or "throw new RuntimeException(e)."

We are removing all calls in preparation for deleting the method.

More information: []

Tested:
    TAP --sample for global presubmit queue
    []
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117628955

java/com/google/domain/registry/util/TypeUtils.java

@@ -19,7 +19,6 @@ import static java.lang.reflect.Modifier.isFinal;
 import static java.lang.reflect.Modifier.isStatic;
 
 import com.google.common.base.Predicate;
-import com.google.common.base.Throwables;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.reflect.TypeToken;
 
@@ -53,7 +52,7 @@ public class TypeUtils {
     try {
       return (T) clazz.newInstance();
     } catch (InstantiationException | IllegalAccessException e) {
-      throw Throwables.propagate(e);
+      throw new RuntimeException(e);
     }
   }
 

java/com/google/domain/registry/util/XmlEnumUtils.java

@@ -14,8 +14,6 @@
 
 package com.google.domain.registry.util;
 
-import com.google.common.base.Throwables;
-
 import javax.xml.bind.annotation.XmlEnumValue;
 
 /** Utility methods related to xml enums. */
@@ -25,7 +23,7 @@ public class XmlEnumUtils {
     try {
       return input.getClass().getField(input.name()).getAnnotation(XmlEnumValue.class).value();
     } catch (NoSuchFieldException e) {
-      throw Throwables.propagate(e);
+      throw new RuntimeException(e);
     }
   }
 }