Remove FDE_USEFORMATBLOCK.

xfa.gyp

 {
   "variables": {
     "pdf_enable_v8%": 1,
   },
   "target_defaults": {
     "defines": [
       "PDF_ENABLE_XFA",
     ],
   },
   "targets":[
@@ skipping 116 matching lines @@
         "xfa/src/fdp/src/fde/fde_render.cpp",
         "xfa/src/fdp/src/fde/fde_render.h",
         "xfa/src/fdp/src/tto/fde_textout.cpp",
         "xfa/src/fdp/src/tto/fde_textout.h",
         "xfa/src/fdp/src/xml/fde_xml_imp.cpp",
         "xfa/src/fdp/src/xml/fde_xml_imp.h",
         "xfa/src/fee/include/fx_wordbreak.h",
         "xfa/src/fee/include/ifde_txtedtbuf.h",
         "xfa/src/fee/include/ifde_txtedtengine.h",
         "xfa/src/fee/include/ifde_txtedtpage.h",
-        "xfa/src/fee/src/fee/fde_txtedtblock.cpp",
-        "xfa/src/fee/src/fee/fde_txtedtblock.h",
         "xfa/src/fee/src/fee/fde_txtedtbuf.cpp",
         "xfa/src/fee/src/fee/fde_txtedtbuf.h",
         "xfa/src/fee/src/fee/fde_txtedtengine.cpp",
         "xfa/src/fee/src/fee/fde_txtedtengine.h",
         "xfa/src/fee/src/fee/fde_txtedtpage.cpp",
         "xfa/src/fee/src/fee/fde_txtedtpage.h",
         "xfa/src/fee/src/fee/fde_txtedtparag.cpp",
         "xfa/src/fee/src/fee/fde_txtedtparag.h",
         "xfa/src/fee/src/fx_wordbreak/fx_wordbreakdata.cpp",
         "xfa/src/fee/src/fx_wordbreak/fx_wordbreak_impl.cpp",
@@ skipping 544 matching lines @@
           "sources": [],
         }],
         ["OS == 'mac'", {
           "configurations": {},
           "sources": [],
         }],
       ]
     }
   ]
 }