Remove unneeded CPVT classes. (try 2)

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index f784f05d80dee2c19d6062c2b1fd471694fbfeee..5985ed6023e607b470df2c026c3a789498509f9c 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -206,7 +206,9 @@ static_library("fpdfdoc") {
     "core/fpdfdoc/cpvt_lineinfo.h",
     "core/fpdfdoc/cpvt_sectioninfo.h",
     "core/fpdfdoc/cpvt_wordinfo.h",
+    "core/fpdfdoc/csection.cpp",
     "core/fpdfdoc/csection.h",
+    "core/fpdfdoc/ctypeset.cpp",
     "core/fpdfdoc/ctypeset.h",
     "core/fpdfdoc/doc_action.cpp",
     "core/fpdfdoc/doc_annot.cpp",
@@ -223,6 +225,7 @@ static_library("fpdfdoc") {
     "core/fpdfdoc/doc_utils.h",
     "core/fpdfdoc/doc_viewerPreferences.cpp",
     "core/fpdfdoc/doc_vt.cpp",
+    "core/fpdfdoc/doc_vt.h",
     "core/fpdfdoc/include/cpdf_variabletext.h",
     "core/fpdfdoc/include/cpvt_line.h",
     "core/fpdfdoc/include/cpvt_secprops.h",
@@ -234,7 +237,6 @@ static_library("fpdfdoc") {
     "core/fpdfdoc/include/fpdf_doc.h",
     "core/fpdfdoc/include/fpdf_tagged.h",
     "core/fpdfdoc/ipvt_fontmap.h",
-    "core/fpdfdoc/pdf_vt.h",
     "core/fpdfdoc/tagged_int.h",
   ]
   configs += [ ":pdfium_config" ]