Remove ability to delete annot in CJS_Document::removeField()

This path has only been present under XFA, and has resulted in
several bugs, including the referenced one. There is a breakage in some
XFA functionality, but I'm not confident we can do this without
re-engineering all of fpdfsdk widget ownership.

Bug: 891210
Change-Id: I5aa158fa5359b1c8338046eefb25fb25df9ace48
Reviewed-on: https://pdfium-review.googlesource.com/c/43311
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

fxjs/cjs_document.cpp

diff --git a/fxjs/cjs_document.cpp b/fxjs/cjs_document.cpp
index c839e9f..35bb240 100644
--- a/fxjs/cjs_document.cpp
+++ b/fxjs/cjs_document.cpp
@@ -440,15 +440,10 @@
     // do not create one. We may be in the process of tearing down the document
     // and creating a new pageview at this point will cause bad things.
     CPDFSDK_PageView* pPageView = m_pFormFillEnv->GetPageView(pPage, false);
-    if (pPageView) {
-#ifdef PDF_ENABLE_XFA
-      pPageView->DeleteAnnot(pWidget);
-#endif  // PDF_ENABLE_XFA
+    if (pPageView)
       pPageView->UpdateRects(aRefresh);
-    }
   }
   m_pFormFillEnv->SetChangeMark();
-
   return CJS_Result::Success();
 }
 

testing/resources/javascript/bug_679642_expected.txt

diff --git a/testing/resources/javascript/bug_679642_expected.txt b/testing/resources/javascript/bug_679642_expected.txt
index 9e99cc6..b576eae 100644
--- a/testing/resources/javascript/bug_679642_expected.txt
+++ b/testing/resources/javascript/bug_679642_expected.txt
@@ -1,3 +1,2 @@
 Alert: Starting ...
 Alert: Firing ...
-Alert: failed: Field.page: Object no longer exists.

testing/resources/javascript/bug_679643_expected.txt

diff --git a/testing/resources/javascript/bug_679643_expected.txt b/testing/resources/javascript/bug_679643_expected.txt
index 36d4a31..b576eae 100644
--- a/testing/resources/javascript/bug_679643_expected.txt
+++ b/testing/resources/javascript/bug_679643_expected.txt
@@ -1,3 +1,2 @@
 Alert: Starting ...
 Alert: Firing ...
-Alert: failed: Annot.name: Object no longer exists.

testing/resources/javascript/xfa_specific/resolve_nodes_1_expected.txt

diff --git a/testing/resources/javascript/xfa_specific/resolve_nodes_1_expected.txt b/testing/resources/javascript/xfa_specific/resolve_nodes_1_expected.txt
index d4cc442..335a4e2 100644
--- a/testing/resources/javascript/xfa_specific/resolve_nodes_1_expected.txt
+++ b/testing/resources/javascript/xfa_specific/resolve_nodes_1_expected.txt
@@ -1 +1 @@
-: \Find 1 items
+: Find 12 items