doc: remove comments suggesting different method for apple silicon

doc/README_macOS.md

@@ -2,14 +2,12 @@ This README presents the two standard methods to install the Coq Platform on mac
 - using a [macOS DMG package](#installation-using-the-macos-dmg-package),
 - [from sources](#installation-by-compiling-from-sources-using-opam), using the platform scripts.
 
-The first method is recommended for beginners (with Intel silicon Macs) and the second one is recommended for experienced users and all users with Apple silicon / M1 Macs.
+The first method is recommended for beginners (with Intel silicon Macs) and the second one is recommended for experienced users.
 
 # Installation using the macOS DMG package
 
 This method is intended for beginners.
 
-**ATTENTION for Apple silicon / M1 users**: if you have an Apple silicon / M1 Mac please use the [from sources](#installation-by-compiling-from-sources-using-opam) method! The DMG installer might work (this is unknown), but the second method will create much faster Coq binaries for M1, even though initially it takes longer.
-
 In case you want to use the fast path:
 
 - Download the DMG package from https://github.com/coq/platform/releases (click on "Assets" at the end of a release section).
@@ -29,7 +27,7 @@ In case you want to use the fast path:
 
 This method is intended for experienced users, who may want to use opam to install additional packages, beyond the standard set provided by the Coq Platform.
 
-**ATTENTION for Apple silicon / M1 users**: when you moved your user data from an Intel silicon Mac, please make sure to rename the `.opam` folder in your home folder to e.g. `.opam_intel` (press `CMD`+`.` to make it visible in finder). If the `.opam` folder was copied over from an Intel silicon Mac, you will end up with a mix of ARM and Intel executables and libraries which won't work. Eventually you might want to delete the `.opam_intel` folder, but please make sure it doesn't contain anything you still need before you delete it.
+**ATTENTION for Apple silicon users**: when you moved your user data from an Intel silicon Mac, please make sure to rename the `.opam` folder in your home folder to e.g. `.opam_intel` (press `CMD`+`.` to make it visible in finder). If the `.opam` folder was copied over from an Intel silicon Mac, you will end up with a mix of ARM and Intel executables and libraries which won't work. Eventually you might want to delete the `.opam_intel` folder, but please make sure it doesn't contain anything you still need before you delete it.
 
 - Install XCode command line tools
   - On macOS Catalina & BigSur: open a console and enter `xcode-select --install` (takes about 5 minutes)