Remove libjingle_root GYP variable

It is no longer needed.

R=andrew@webrtc.org, perkj@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/44449004

Cr-Commit-Position: refs/heads/master@{#8627}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8627 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/all.gyp b/all.gyp
index 2280c03..702e7d0 100644
--- a/all.gyp
+++ b/all.gyp
@@ -8,10 +8,8 @@
 
 {
   'variables': {
-    'libjingle_root%': '<(DEPTH)',
     'include_tests%': 1,
-    'webrtc_root_additional_dependencies': [
-    ],
+    'webrtc_root_additional_dependencies': [],
   },
   'targets': [
     {
@@ -19,8 +17,8 @@
       'type': 'none',
       'dependencies': [
         'webrtc/webrtc.gyp:*',
-        '<(libjingle_root)/talk/libjingle.gyp:*',
-        '<(libjingle_root)/talk/libjingle_examples.gyp:*',
+        'talk/libjingle.gyp:*',
+        'talk/libjingle_examples.gyp:*',
         '<@(webrtc_root_additional_dependencies)',
       ],
       'conditions': [
@@ -31,7 +29,7 @@
         }],
         ['include_tests==1', {
           'dependencies': [
-            '<(libjingle_root)/talk/libjingle_tests.gyp:*',
+            'talk/libjingle_tests.gyp:*',
           ],
         }],
       ],