llvmPackages*.clang_manpages: drop the sphinx find_package patch

This is a backport of f8cbbdd.

LLVM versions >= 5.0.0 already look for sphinx when `LLVM_ENABLE_SPHINX`
is enabled: llvm/llvm-project@ea139ec

pkgs/development/compilers/llvm/10/clang/default.nix

@@ -55,9 +55,6 @@ let
       sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' \
              -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' \
              lib/Driver/ToolChains/*.cpp
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '' + lib.optionalString stdenv.hostPlatform.isDarwin ''

pkgs/development/compilers/llvm/11/clang/default.nix

@@ -60,9 +60,6 @@ let
       sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' \
              -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' \
              lib/Driver/ToolChains/*.cpp
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '' + lib.optionalString stdenv.hostPlatform.isDarwin ''

pkgs/development/compilers/llvm/12/clang/default.nix

@@ -57,9 +57,6 @@ let
       sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' \
              -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' \
              lib/Driver/ToolChains/*.cpp
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '';

pkgs/development/compilers/llvm/13/clang/default.nix

@@ -51,9 +51,6 @@ let
 
     postPatch = ''
       (cd tools && ln -s ../../clang-tools-extra extra)
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '';

pkgs/development/compilers/llvm/14/clang/default.nix

@@ -54,9 +54,6 @@ let
 
     postPatch = ''
       (cd tools && ln -s ../../clang-tools-extra extra)
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '';

pkgs/development/compilers/llvm/5/clang/default.nix

@@ -53,9 +53,6 @@ let
       sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' \
              -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' \
              lib/Driver/ToolChains/*.cpp
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '';

pkgs/development/compilers/llvm/6/clang/default.nix

@@ -53,9 +53,6 @@ let
       sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' \
              -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' \
              lib/Driver/ToolChains/*.cpp
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '';

pkgs/development/compilers/llvm/7/clang/default.nix

@@ -62,9 +62,6 @@ let
       sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' \
              -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' \
              lib/Driver/ToolChains/*.cpp
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '' + lib.optionalString stdenv.hostPlatform.isDarwin ''

pkgs/development/compilers/llvm/8/clang/default.nix

@@ -68,9 +68,6 @@ let
       sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' \
              -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' \
              lib/Driver/ToolChains/*.cpp
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '' + lib.optionalString stdenv.hostPlatform.isDarwin ''

pkgs/development/compilers/llvm/9/clang/default.nix

@@ -61,9 +61,6 @@ let
       sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' \
              -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' \
              lib/Driver/ToolChains/*.cpp
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '' + lib.optionalString stdenv.hostPlatform.isDarwin ''

pkgs/development/compilers/llvm/git/clang/default.nix

@@ -55,9 +55,6 @@ let
 
     postPatch = ''
       (cd tools && ln -s ../../clang-tools-extra extra)
-
-      # Patch for standalone doc building
-      sed -i '1s,^,find_package(Sphinx REQUIRED)\n,' docs/CMakeLists.txt
     '' + lib.optionalString stdenv.hostPlatform.isMusl ''
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '';