[llvm] [Release] Don't build during test-release.sh Phase 3 install (PR #82001)

[Tom Stellard via llvm-commits]

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@@ -537,6 +537,11 @@ function build_llvmCore() {
         InstallTarget="$InstallTarget install-builtins"
       fi
     fi
+    if [ "$Phase" -eq "3" ]; then
+      # Build everything at once, with the proper parallelism and verbosity,
+      # in Phase 3.
+      BuildTarget=
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tstellar wrote:

Does this actually change anything?  Isn't this variable already unset?

https://github.com/llvm/llvm-project/pull/82001