Remove obsolete TODO

Removes obsolete TODO referring to "uncached" painting. This only
occurred in a special debug-only code path, which subsequently was
deleted in https://pdfium-review.googlesource.com/102410.

Bug: pdfium:1541
Change-Id: I6f5c183cd66cedc66123b4ef7d37b50de53aed43
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/102450
Commit-Queue: Nigi <nigi@chromium.org>
Commit-Queue: K. Moon <kmoon@chromium.org>
Auto-Submit: K. Moon <kmoon@chromium.org>
Reviewed-by: Nigi <nigi@chromium.org>
diff --git a/fpdfsdk/fpdf_annot_embeddertest.cpp b/fpdfsdk/fpdf_annot_embeddertest.cpp
index f6c2d05..c1ad3a9 100644
--- a/fpdfsdk/fpdf_annot_embeddertest.cpp
+++ b/fpdfsdk/fpdf_annot_embeddertest.cpp
@@ -1324,10 +1324,6 @@
   UnloadPage(page);
 }
 
-// TODO(crbug.com/pdfium/1541): When Skia is enabled and its cache rendering is
-// disabled (To turn off cache, set `m_debugDisable` to true in
-// core/fxge/skia/fx_skia_device.cpp.), `kMd5NewImage`'s rendering result is
-// incorrect compared to the expectation.
 TEST_F(FPDFAnnotEmbedderTest, AddAndModifyImage) {
   const char* md5_new_image = []() {
     if (CFX_DefaultRenderDevice::SkiaIsDefaultRenderer())