Remove Chromium's copy of OpenSSL.

Chromium now uses boringssl instead of openssl; remove the
no-longer-maintained copy of openssl.
Change-Id: Ic923b036c70dcfbaa374ea187badb76e76422935

default.xml

@@ -89,7 +89,6 @@
   <project path="external/chromium_org/third_party/libyuv" name="platform/external/chromium_org/third_party/libyuv" />
   <project path="external/chromium_org/third_party/mesa/src" name="platform/external/chromium_org/third_party/mesa/src" />
   <project path="external/chromium_org/third_party/openmax_dl" name="platform/external/chromium_org/third_party/openmax_dl" />
-  <project path="external/chromium_org/third_party/openssl" name="platform/external/chromium_org/third_party/openssl" />
   <project path="external/chromium_org/third_party/opus/src" name="platform/external/chromium_org/third_party/opus/src" />
   <project path="external/chromium_org/third_party/ots" name="platform/external/chromium_org/third_party/ots" />
   <project path="external/chromium_org/third_party/sfntly/cpp/src" name="platform/external/chromium_org/third_party/sfntly/cpp/src" />