Revert "Add Apache Geode support (#366)"

This revert is done because Geode is not supported by Spring IO yet.

This reverts commit 1256a94d7e.

# Conflicts:
#	gradle.properties
#	settings.gradle

samples/httpsession-gemfire-clientserver/src/main/java/sample/ClassLocator.java

@@ -1,38 +0,0 @@
-/*
- * Copyright 2014-2016 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package sample;
-
-/**
- * The ClassLocator class...
- *
- * @author John Blum
- * @since 1.0.0
- */
-public final class ClassLocator {
-
-	private ClassLocator() {
-	}
-
-	public static void main(final String[] args) throws ClassNotFoundException {
-		String className = "org.w3c.dom.ElementTraversal";
-		//String className = (args.length > 0 ? args[0] : "com.gemstone.gemfire.cache.Cache");
-		Class<?> type = Class.forName(className);
-		String resourceName = type.getName().replaceAll("\\.", "/").concat(".class");
-		System.out.printf("class [%1$s] with resource name [%2$s] is found in [%3$s]%n",
-			className, resourceName, type.getClassLoader().getResource(resourceName));
-	}
-}