Remove unused private methods

Change-Id: I91ec7b6791edd5672b2a9008e118f0d5f9a3f331

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 2ccc438..6cf73ad 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
@@ -49,7 +49,6 @@
 import java.io.File;
 import java.io.IOException;
 import java.net.InetAddress;
-import java.net.URI;
 import java.net.URISyntaxException;
 import java.net.UnknownHostException;
 import java.nio.file.NoSuchFileException;
@@ -84,16 +83,6 @@
     return cfg;
   }
 
-  private static NoSuchFileException badSourceRoot(URI u) {
-    return new NoSuchFileException("Cannot find source root from " + u);
-  }
-
-  private static NoSuchFileException badSourceRoot(URI u, Throwable cause) {
-    NoSuchFileException notFound = badSourceRoot(u);
-    notFound.initCause(cause);
-    return notFound;
-  }
-
   private static Path findSourceRoot() throws IOException {
     String prop = "com.google.gitiles.sourcePath";
     String sourceRoot = System.getProperty(prop);