Skip building distribution tar files for 32 bit Mac (#7214)

diff --git a/protoc-artifacts/build-zip.sh b/protoc-artifacts/build-zip.sh
index 7c4daf4..b5bf70a 100755
--- a/protoc-artifacts/build-zip.sh
+++ b/protoc-artifacts/build-zip.sh
@@ -13,10 +13,9 @@
 This script will download pre-built protoc or protoc plugin binaries from maven
 repository and create .zip packages suitable to be included in the github
 release page. If the target is protoc, well-known type .proto files will also be
-included. Each invocation will create 9 zip packages:
+included. Each invocation will create 8 zip packages:
   dist/<TARGET>-<VERSION_NUMBER>-win32.zip
   dist/<TARGET>-<VERSION_NUMBER>-win64.zip
-  dist/<TARGET>-<VERSION_NUMBER>-osx-x86_32.zip
   dist/<TARGET>-<VERSION_NUMBER>-osx-x86_64.zip
   dist/<TARGET>-<VERSION_NUMBER>-linux-x86_32.zip
   dist/<TARGET>-<VERSION_NUMBER>-linux-x86_64.zip
@@ -34,7 +33,6 @@
 declare -a FILE_NAMES=( \
   win32.zip windows-x86_32.exe \
   win64.zip windows-x86_64.exe \
-  osx-x86_32.zip osx-x86_32.exe \
   osx-x86_64.zip osx-x86_64.exe \
   linux-x86_32.zip linux-x86_32.exe \
   linux-x86_64.zip linux-x86_64.exe \