Remove /target from .gitignore

This folder is created by Maven, and the Maven build
was removed.

Change-Id: I0f3b36846636c293dff37112e53545d9bda1b3c5

.gitignore

diff --git a/.gitignore b/.gitignore
index 80d6257..499784b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,3 @@
-/target
 /.classpath
 /.project
 /.settings/org.maven.ide.eclipse.prefs