update maven docs, we don't use Java6 anymore

h2/MAVEN.md

@@ -9,31 +9,6 @@ Welcome to H2, the Java SQL database. The main features of H2 are:
 
 ## Experimental Building & Testing with Maven
 
-### Setup JDK
-
-Maven requires at minimum the JDK 1.7 whereas H2 is designed to be compiled against the JDK 1.6; the way in which this is
-resolved is through [maven toolchains](https://maven.apache.org/guides/mini/guide-using-toolchains.html).
-
-You simply need to create a `toolchains.xml` file in `~/.m2/` that tells maven where to find the JDK 1.6
-
-Here is a sample file
-
-```
-<?xml version="1.0" encoding="UTF8"?>
-<toolchains>
-  <!-- JDK toolchains -->
-  <toolchain>
-    <type>jdk</type>
-    <provides>
-      <version>1.6</version>
-    </provides>
-    <configuration>
-      <jdkHome>/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/</jdkHome>
-    </configuration>
-  </toolchain>
-</toolchains>
-```
-
 ### Building
 
 H2 uses [Maven Wrapper](https://github.com/takari/maven-wrapper) setup, you can instruct users to run wrapper scripts: