simplify install file

INSTALL.md

@@ -89,7 +89,6 @@ If your system does not support Makefiles or the `make` command here are the CMa
 # Configure the project cmake files.
 # Replace this preset with your own if you'd like.
 cmake --preset=clang-rel -DCMAKE_INSTALL_PREFIX=[DESIRED/INSTALL/LOCATION]
-cmake --build build
 cmake --build build --target install
 ```
 
@@ -145,7 +144,6 @@ Then your preset can be invoked as follows:
 ```zsh
 # Your preferred preset with the same other steps as before.
 cmake --preset=rel -DCMAKE_INSTALL_PREFIX=[DESIRED/INSTALL/LOCATION]
-cmake --build build
 cmake --build build --target install
 ```