linux: remove stray libcrypto dependency

Followup to CL 20049004, which looks like it added an unneeded -lcrypto
on linux.

BUG=3625
R=henrike@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/28459004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@7168 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/base/base.gyp b/base/base.gyp
index bfc6ef9..58c4994 100644
--- a/base/base.gyp
+++ b/base/base.gyp
@@ -605,7 +605,6 @@
         ['OS=="linux"', {
           'link_settings': {
             'libraries': [
-              '-lcrypto',
               '-ldl',
               '-lrt',
             ],