Remove spec file support for power9 multilib

This is not used in Fedora, and downstream removed the multilib
as well.

glibc.spec

@@ -58,13 +58,6 @@
 # Only some architectures have static PIE support.
 %define pie_arches %{ix86} x86_64
 
-# Build the POWER9 runtime on POWER, but only for downstream.
-%ifarch ppc64le
-%define buildpower9 0%{?rhel} > 0
-%else
-%define buildpower9 0
-%endif
-
 # The annobin annotations cause binutils to produce broken ARM EABI
 # unwinding information.  Symptom is a hang/test failure for
 # malloc/tst-malloc-stats-cancellation.  See
@@ -1185,15 +1178,6 @@ build()
 # Default set of compiler options.
 build
 
-%if %{buildpower9}
-(
-  GCC="$GCC -mcpu=power9 -mtune=power9"
-  GXX="$GXX -mcpu=power9 -mtune=power9"
-  core_with_options="--with-cpu=power9"
-  build power9
-)
-%endif
-
 ##############################################################################
 # Install glibc...
 ##############################################################################
@@ -1278,12 +1262,6 @@ install_different()
 	done
 }
 
-%if %{buildpower9}
-pushd build-%{target}-power9
-install_different "$RPM_BUILD_ROOT/%{_lib}" power9 ..
-popd
-%endif
-
 ##############################################################################
 # Remove the files we don't want to distribute
 ##############################################################################
@@ -1990,15 +1968,6 @@ pushd build-%{target}
 run_tests
 popd
 
-%if %{buildpower9}
-echo ====================TESTING -mcpu=power9=============
-pushd build-%{target}-power9
-run_tests
-popd
-%endif
-
-
-
 echo ====================TESTING END=====================
 PLTCMD='/^Relocation section .*\(\.rela\?\.plt\|\.rela\.IA_64\.pltoff\)/,/^$/p'
 echo ====================PLT RELOCS LD.SO================
@@ -2093,7 +2062,9 @@ local remove_dirs = { "%{_libdir}/i686",
 		      "%{_libdir}/i686/nosegneg",
 		      "%{_libdir}/power6",
 		      "%{_libdir}/power7",
-		      "%{_libdir}/power8" }
+		      "%{_libdir}/power8",
+		      "%{_libdir}/power9",
+		    }
 
 -- Walk all the directories with files we need to remove...
 for _, rdir in ipairs (remove_dirs) do
@@ -2221,9 +2192,6 @@ fi
 
 %files -f glibc.filelist
 %dir %{_prefix}/%{_lib}/audit
-%if %{buildpower9}
-%dir /%{_lib}/power9
-%endif
 %verify(not md5 size mtime) %config(noreplace) /etc/nsswitch.conf
 %verify(not md5 size mtime) %config(noreplace) /etc/ld.so.conf
 %verify(not md5 size mtime) %config(noreplace) /etc/rpc