Tech review of PGO in Windows

Author: jasonrandrews

content/learning-paths/laptops-and-desktops/win_profile_guided_optimisation/how-to-3.md

@@ -56,7 +56,11 @@ BENCHMARK_MAIN();
 
 ## Compile and run the baseline benchmark
 
-Open an **ARM64 Native Tools Command Prompt** from the Start menu, then type `powershell` to start PowerShell with the ARM64 compiler environment.
+Open an **ARM64 Native Tools Command Prompt** from the Windows Start menu and start PowerShell:
+
+```console
+powershell
+```
 
 Before compiling, set an environment variable to refer to the vcpkg installation directory:
 

content/learning-paths/laptops-and-desktops/win_profile_guided_optimisation/how-to-4.md

@@ -12,12 +12,6 @@ Now that you have a baseline benchmark, you're ready to apply Profile-Guided Opt
 
 You should already have an ARM64 Native Tools Command Prompt open with PowerShell running from the previous section.
 
-Set the environment variable to refer to the vcpkg installation directory:
-
-```console
-$VCPKG="$HOME\pgo-benchmark\vcpkg_installed\arm64-windows"
-```
-
 Build the instrumented binary with the `/GENPROFILE` flag. This creates a version of your program that records how it executes:
 
 ```console