Intellij doesn't like trailing newlines; removed from neo4j.xml.

Summary:
IntelliJ strips trailing newlines on opening a project library xml,
so we strip it out here to avoid dirtying people's repos when they
use Intellij.

Test Plan: Open up project in IntelliJ and see that it doesn't change.
diff --git a/.idea/libraries/neo4j.xml b/.idea/libraries/neo4j.xml
index 00c149f..9a02452 100644
--- a/.idea/libraries/neo4j.xml
+++ b/.idea/libraries/neo4j.xml
@@ -9,5 +9,4 @@
     <JAVADOC />
     <SOURCES />
   </library>
-</component>
-
+</component>
\ No newline at end of file