Remove obsolete unused file.

tools/android/eclipse/.classpath

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- {% block header_message %}
 
 Eclipse classpath. See instructions at
 https://www.chromium.org/developers/android-eclipse-dev for setting up Eclipse
 for Chrome Android development.
 
 Obsolete entries can be found using:
 
   for f in $(grep -oP '(?<= path=")[^"]*' tools/android/eclipse/.classpath); do
     [[ -e $f ]] || echo $f
   done
 
 Note: this file can be processed as a Jinja2 template to add additional entries
 to the classpath for downstream development. See "additional_entries" below.
 
 {% endblock %} -->
 <classpath>
     <classpathentry kind="src" path="android_webview/glue/java/src"/>
-    <classpathentry kind="src" path="android_webview/java/generated_src"/>
     <classpathentry kind="src" path="android_webview/java/src"/>
     <classpathentry kind="src" path="android_webview/javatests/src"/>
     <classpathentry kind="src" path="android_webview/test/shell/src"/>
     <classpathentry kind="src" path="android_webview/unittestjava/src"/>
     <classpathentry kind="src" path="base/android/java/src"/>
     <classpathentry kind="src" path="base/android/javatests/src"/>
     <classpathentry kind="src" path="base/test/android/javatests/src"/>
     <classpathentry kind="src" path="blimp/client/app/android/java/src"/>
     <classpathentry kind="src" path="blimp/client/app/android/javatests/src"/>
     <classpathentry kind="src" path="blimp/client/core/android/java/src"/>
@@ skipping 266 matching lines @@
     <classpathentry kind="lib" path="out/Debug/lib.java/ui/accessibility/ui_accessibility_java.jar"/>
     <classpathentry kind="lib" path="out/Debug/lib.java/ui/android/ui_java.jar"/>
     <classpathentry kind="lib" path="out/Debug/lib.java/ui/base/mojo/mojo_bindings_java.jar"/>
 
     <!-- {% block additional_entries %} -->
     <!-- When this file is processed as a jinja2 template, additional
          <classpathentry> elements will be inserted here. -->
     <!-- {% endblock %} -->
 
 </classpath>