Drop windows7.patch.1 from pdfium

Change-Id: Idb458e3e65bc22d148cc68e496aa0dda32fec2a2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/178079
Tested-by: Jenkins
Reviewed-by: Ilmari Lauhakangas <ilmari.lauhakangas@libreoffice.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

external/pdfium/UnpackedTarball_pdfium.mk

@@ -10,8 +10,6 @@
 pdfium_patches :=
 # Fixes build on our baseline.
 pdfium_patches += build.patch.1
-# Avoids Windows 8 build dependency.
-pdfium_patches += windows7.patch.1
 pdfium_patches += c++20-comparison.patch
 
 pdfium_patches += constexpr-template.patch

external/pdfium/windows7.patch.1

@@ -1,34 +0,0 @@
-diff --git a/core/fxcrt/win/win_util.cc b/core/fxcrt/win/win_util.cc
-index 43e9151d1..76657ac0a 100644
---- a/core/fxcrt/win/win_util.cc
-+++ b/core/fxcrt/win/win_util.cc
-@@ -10,28 +10,7 @@
- namespace pdfium {
- 
- bool IsUser32AndGdi32Available() {
--  static auto is_user32_and_gdi32_available = []() {
--    // If win32k syscalls aren't disabled, then user32 and gdi32 are available.
--
--    typedef decltype(
--        GetProcessMitigationPolicy)* GetProcessMitigationPolicyType;
--    GetProcessMitigationPolicyType get_process_mitigation_policy_func =
--        reinterpret_cast<GetProcessMitigationPolicyType>(GetProcAddress(
--            GetModuleHandle(L"kernel32.dll"), "GetProcessMitigationPolicy"));
--
--    if (!get_process_mitigation_policy_func)
--      return true;
--
--    PROCESS_MITIGATION_SYSTEM_CALL_DISABLE_POLICY policy = {};
--    if (get_process_mitigation_policy_func(GetCurrentProcess(),
--                                           ProcessSystemCallDisablePolicy,
--                                           &policy, sizeof(policy))) {
--      return policy.DisallowWin32kSystemCalls == 0;
--    }
--
--    return true;
--  }();
--  return is_user32_and_gdi32_available;
-+  return true;
- }
- 
- }  // namespace pdfium