remove IllegalStateException catch block

That will ALWAYS get wrapped in a InvocationTargetException anyway, as we
are calling it via reflection.
diff --git a/jbatch/src/main/java/org/apache/batchee/container/cdi/BatchCDIInjectionExtension.java b/jbatch/src/main/java/org/apache/batchee/container/cdi/BatchCDIInjectionExtension.java
index abc6c14..f7d47ac 100755
--- a/jbatch/src/main/java/org/apache/batchee/container/cdi/BatchCDIInjectionExtension.java
+++ b/jbatch/src/main/java/org/apache/batchee/container/cdi/BatchCDIInjectionExtension.java
@@ -111,13 +111,10 @@
             try {

                 return (BeanManager) CDI_GET_BEAN_MANAGER_METHOD.invoke(CDI_CURRENT_METHOD.invoke(null));

             } catch (Exception e) {

-                if (e instanceof IllegalStateException) {

+                if (e instanceof InvocationTargetException && e.getCause() instanceof IllegalStateException) {

                     // all fine, that just means that no CDI container is available right now.

                     // Maybe we only have the spec jar in the classpath, but no container is started?

-                    return null;

-                }

-                if (e instanceof InvocationTargetException && e.getCause() instanceof IllegalStateException) {

-                    // same as above

+                    // we always get it wrapped in a InvocationTargetException as we use reflection.

                     return null;

                 }