update to golang 1.21.5

Signed-off-by: Toshaan Bharvani <toshaan@powerel.org>

SPECS/golang.spec

@@ -61,7 +61,7 @@
 %global gohostarch  s390x
 %endif
 
-%global go_api 1.20.3
+%global go_api 1.21.5
 %global go_version %{go_api}
 %global baserelease 1
 
@@ -75,7 +75,6 @@ Source0:        https://storage.googleapis.com/golang/go%{go_version}.src.tar.gz
 Source1:        powerel.go
 Source100:      golang-gdbinit
 Source101:      golang-prelink.conf
-Patch1:         disable-google-proxy-and-sumdb.patch
 %if !%{golang_bootstrap}
 BuildRequires:  gcc-go >= 5
 %else