Remove unused import

Change-Id: I7df5a5958b7c4888c1510473aabe87916d77c8fd

gitiles-dev/src/main/java/com/google/gitiles/dev/DevServer.java

diff --git a/gitiles-dev/src/main/java/com/google/gitiles/dev/DevServer.java b/gitiles-dev/src/main/java/com/google/gitiles/dev/DevServer.java
index 0a91433..2ccc438 100644
--- a/gitiles-dev/src/main/java/com/google/gitiles/dev/DevServer.java
+++ b/gitiles-dev/src/main/java/com/google/gitiles/dev/DevServer.java
@@ -52,7 +52,6 @@
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.UnknownHostException;
-import java.nio.file.Files;
 import java.nio.file.NoSuchFileException;
 import java.nio.file.Path;
 import java.nio.file.Paths;