Merge bitcoin/bitcoin#28778: depends: drop -O1 workaround from arm64 apple Qt build

664c873 depends: drop -O1 workaround from arm64 apple Qt build (fanquake)

Pull request description:

  Drop the workaround of setting optimization flags to -O1 for the `arm64-apple-darwin` builds. I no-longer see reproducibility issues when building across `x86_64` and `aarch64`:
  ```bash
  real7m21.192s
  user67m41.047s
  sys5m8.596s
  fedora-32gb-hel1-1 bitcoin]# find guix-build-$(git rev-parse --short=12 HEAD)/output/ -type f -print0 | env LC_ALL=C sort -z | xargs -r0 sha256sum
  62373549d2884e8ef8f46a77b9a93f64ebfc88603569e9d33b68fc67beaf2226  guix-build-664c87354f9e/output/arm64-apple-darwin/SHA256SUMS.part
  597889f1908fdb67a6419177a98935b7119c637a962f03f47270893c5ba3fd6f  guix-build-664c87354f9e/output/arm64-apple-darwin/bitcoin-664c87354f9e-arm64-apple-darwin-unsigned.tar.gz
  289340354532a54a42b7235c831d13fdb28751c643f0fa0fc417ab195e9b5d90  guix-build-664c87354f9e/output/arm64-apple-darwin/bitcoin-664c87354f9e-arm64-apple-darwin-unsigned.zip
  74f4ab3819a186d6c34ca0a4b9dda7c38fcb36bd9b22075a5d91df9bdd5df98a  guix-build-664c87354f9e/output/arm64-apple-darwin/bitcoin-664c87354f9e-arm64-apple-darwin.tar.gz
  f0d0dad63057c7dddf6d6ccee244e7916ac0ee26b3bef8dd35f8430280043b38  guix-build-664c87354f9e/output/dist-archive/bitcoin-664c87354f9e.tar.gz
  fedora-32gb-hel1-1 bitcoin]# uname -m
  aarch64
  ```

  ```bash
  real18m10.759s
  user108m21.656s
  sys6m12.930s
  ubuntu-32gb-hel1-1:~/bitcoin# find guix-build-$(git rev-parse --short=12 HEAD)/output/ -type f -print0 | env LC_ALL=C sort -z | xargs -r0 sha256sum
  62373549d2884e8ef8f46a77b9a93f64ebfc88603569e9d33b68fc67beaf2226  guix-build-664c87354f9e/output/arm64-apple-darwin/SHA256SUMS.part
  597889f1908fdb67a6419177a98935b7119c637a962f03f47270893c5ba3fd6f  guix-build-664c87354f9e/output/arm64-apple-darwin/bitcoin-664c87354f9e-arm64-apple-darwin-unsigned.tar.gz
  289340354532a54a42b7235c831d13fdb28751c643f0fa0fc417ab195e9b5d90  guix-build-664c87354f9e/output/arm64-apple-darwin/bitcoin-664c87354f9e-arm64-apple-darwin-unsigned.zip
  74f4ab3819a186d6c34ca0a4b9dda7c38fcb36bd9b22075a5d91df9bdd5df98a  guix-build-664c87354f9e/output/arm64-apple-darwin/bitcoin-664c87354f9e-arm64-apple-darwin.tar.gz
  f0d0dad63057c7dddf6d6ccee244e7916ac0ee26b3bef8dd35f8430280043b38  guix-build-664c87354f9e/output/dist-archive/bitcoin-664c87354f9e.tar.gz
  ubuntu-32gb-hel1-1:~/bitcoin# uname -m
  x86_64
  ```

ACKs for top commit:
  hebasto:
    ACK 664c873.
  TheCharlatan:
    ACK 664c873

Tree-SHA512: 79527df4181eb0a0c42fe526581479abcdeba8fb09e1faf52265d697d39a8f3a3532ee3c573579b9af00b7330a401e4b6f1686636f9bac6bf9839be8381a2033

Author: fanquake

depends/packages/qt.mk

@@ -134,9 +134,6 @@ $(package)_config_opts_darwin += -no-feature-corewlan
 $(package)_config_opts_darwin += -no-freetype
 $(package)_config_opts_darwin += QMAKE_MACOSX_DEPLOYMENT_TARGET=$(OSX_MIN_VERSION)
 
-# Optimizing using > -O1 causes non-determinism when building across arches.
-$(package)_config_opts_aarch64_darwin += "QMAKE_CFLAGS_OPTIMIZE_FULL = -O1"
-
 ifneq ($(build_os),darwin)
 $(package)_config_opts_darwin += -xplatform macx-clang-linux
 $(package)_config_opts_darwin += -device-option MAC_SDK_PATH=$(OSX_SDK)