Remove reference to file deleted in r134284

BUG=119511
TEST=none
TBR=brettw

Review URL: https://chromiumcodereview.appspot.com/10260015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@134548 0039d316-1c4b-4281-b951-d872f2087c98

ppapi/ppapi_shared.gypi

@@ -229,7 +229,6 @@
         'thunk/ppb_tcp_server_socket_private_thunk.cc',
         'thunk/ppb_tcp_socket_private_api.h',
         'thunk/ppb_tcp_socket_private_thunk.cc',
-        'thunk/ppb_text_input_api.h',
         'thunk/ppb_text_input_thunk.cc',
         'thunk/ppb_transport_api.h',
         'thunk/ppb_transport_thunk.cc',