Don't use a version script when linking libpdf.so

pdf/pdf.gyp

 {
   'variables': {
     'chromium_code': 1,
     'pdf_engine%': 0,  # 0 PDFium
   },
   'target_defaults': {
     'cflags': [
       '-fPIC',
     ],
   },
@@ skipping 100 matching lines @@
         }],
         ['OS=="linux"', {
           'configurations': {
             'Release_Base': {
               #'cflags': [ '-fno-weak',],  # get rid of symbols that strip doesn't remove.
               # Don't do this for now since official builder will take care of it.  That
               # way symbols can still be uploaded to the crash server.
               #'ldflags': [ '-s',],  # strip local symbols from binary.
             },
           },
-          # Use a custom version script to prevent leaking the vendor name in
-          # visible symbols.
-          'ldflags': [
-            '-Wl,--version-script=<!(cd <(DEPTH) && pwd -P)/pdf/libpdf.map'
-          ],
         }],
       ],
     },
   ],
   'conditions': [
     # CrOS has a separate step to do this.
     ['OS=="linux" and chromeos==0',
       { 'targets': [
         {
           'target_name': 'pdf_linux_symbols',
@@ skipping 60 matching lines @@
                 '--input_symbol', '<(PRODUCT_DIR)/pdf.dll.pdb',
                 '--destination_dir', '<(dest_dir)',
               ],
             },
           ],
         },
       ],
     }],  # OS=="win" and fastbuild==0 and target_arch=="ia32" and syzyasan==1
   ],
 }