haskell.compiler.ghc94{5,6}: remove at 9.4.5 and 9.4.6, respectively

Both are affected by <https://gitlab.haskell.org/ghc/ghc/-/issues/23762>
which is now cropping up on our CI (for Cabal 3.14). I don't really see
why we absolutely have to keep them, so it seems just better overall to
use this as an excuse to remove them (after NixOS 24.11 branch off).

doc/languages-frameworks/haskell.section.md

@@ -57,7 +57,7 @@ Available compilers are collected under `haskell.compiler`.
 Each of those compiler versions has a corresponding attribute set `packages` built with
 it. However, the non-standard package sets are not tested regularly and, as a
 result, contain fewer working packages. The corresponding package set for GHC
-9.4.5 is `haskell.packages.ghc945`. In fact `haskellPackages` (at the time of writing) is just an alias
+9.4.8 is `haskell.packages.ghc948`. In fact `haskellPackages` (at the time of writing) is just an alias
 for `haskell.packages.ghc966`:
 
 Every package set also re-exposes the GHC used to build its packages as `haskell.packages.*.ghc`.

pkgs/top-level/haskell-packages.nix

@@ -174,56 +174,6 @@ in {
       llvmPackages = pkgs.llvmPackages_12;
     };
     ghc92 = compiler.ghc928;
-    ghc945 = callPackage ../development/compilers/ghc/9.4.5.nix {
-      bootPkgs =
-        # Building with 9.2 is broken due to
-        # https://gitlab.haskell.org/ghc/ghc/-/issues/21914
-        # Use 8.10 as a workaround where possible to keep bootstrap path short.
-
-        # On ARM text won't build with GHC 8.10.*
-        if stdenv.buildPlatform.isAarch then
-          # TODO(@sternenseemann): package bindist
-          bb.packages.ghc902
-        # No suitable bindists for powerpc64le
-        else if stdenv.buildPlatform.isPower64 && stdenv.buildPlatform.isLittleEndian then
-          bb.packages.ghc902
-        else
-          bb.packages.ghc8107Binary;
-      inherit (buildPackages.python311Packages) sphinx; # a distutils issue with 3.12
-      python3 = buildPackages.python311; # so that we don't have two of them
-      # Need to use apple's patched xattr until
-      # https://github.com/xattr/xattr/issues/44 and
-      # https://github.com/xattr/xattr/issues/55 are solved.
-      inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
-      # Support range >= 10 && < 14
-      buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
-      llvmPackages = pkgs.llvmPackages_12;
-    };
-    ghc946 = callPackage ../development/compilers/ghc/9.4.6.nix {
-      bootPkgs =
-        # Building with 9.2 is broken due to
-        # https://gitlab.haskell.org/ghc/ghc/-/issues/21914
-        # Use 8.10 as a workaround where possible to keep bootstrap path short.
-
-        # On ARM text won't build with GHC 8.10.*
-        if stdenv.buildPlatform.isAarch then
-          # TODO(@sternenseemann): package bindist
-          bb.packages.ghc902
-        # No suitable bindists for powerpc64le
-        else if stdenv.buildPlatform.isPower64 && stdenv.buildPlatform.isLittleEndian then
-          bb.packages.ghc902
-        else
-          bb.packages.ghc8107Binary;
-      inherit (buildPackages.python311Packages) sphinx; # a distutils issue with 3.12
-      python3 = buildPackages.python311; # so that we don't have two of them
-      # Need to use apple's patched xattr until
-      # https://github.com/xattr/xattr/issues/44 and
-      # https://github.com/xattr/xattr/issues/55 are solved.
-      inherit (buildPackages.darwin) xattr autoSignDarwinBinariesHook;
-      # Support range >= 10 && < 14
-      buildTargetLlvmPackages = pkgsBuildTarget.llvmPackages_12;
-      llvmPackages = pkgs.llvmPackages_12;
-    };
     ghc947 = callPackage ../development/compilers/ghc/9.4.7.nix {
       bootPkgs =
         # Building with 9.2 is broken due to
@@ -532,16 +482,6 @@ in {
       compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-9.2.x.nix { };
     };
     ghc92 = packages.ghc928;
-    ghc945 = callPackage ../development/haskell-modules {
-      buildHaskellPackages = bh.packages.ghc945;
-      ghc = bh.compiler.ghc945;
-      compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-9.4.x.nix { };
-    };
-    ghc946 = callPackage ../development/haskell-modules {
-      buildHaskellPackages = bh.packages.ghc946;
-      ghc = bh.compiler.ghc946;
-      compilerConfig = callPackage ../development/haskell-modules/configuration-ghc-9.4.x.nix { };
-    };
     ghc947 = callPackage ../development/haskell-modules {
       buildHaskellPackages = bh.packages.ghc947;
       ghc = bh.compiler.ghc947;

pkgs/top-level/release-haskell.nix

@@ -65,8 +65,6 @@ let
     ghc926
     ghc927
     ghc928
-    ghc945
-    ghc946
     ghc947
     ghc948
     ghc963
@@ -555,8 +553,6 @@ let
         compilerNames.ghc926
         compilerNames.ghc927
         compilerNames.ghc928
-        compilerNames.ghc945
-        compilerNames.ghc946
         compilerNames.ghc947
         compilerNames.ghc948
         compilerNames.ghc9101