remove duplicated make rule

Author: albestro

stackinator/templates/Makefile.compilers

@@ -28,10 +28,6 @@ all:{% for compiler in compilers %} {{ compiler }}/generated/build_cache{% endfo
 
 {% endfor %}
 
-# Configure the install location.
-{% for compiler in compilers %}{{ compiler }}/config.yaml {% endfor %}: | store
-	$(SPACK) config --scope=user add config:install_tree:root:$(STORE)
-
 # Configure the install location.
 {% for compiler in compilers %}{{ compiler }}/config.yaml {% endfor %}: | store
 	$(SPACK) config --scope=user add config:install_tree:root:$(STORE)
@@ -42,7 +38,6 @@ all:{% for compiler in compilers %} {{ compiler }}/generated/build_cache{% endfo
 {{ compiler }}/packages.yaml:
 	$(SPACK) external find --scope=user {% for package in config.packages.external %} {{package}}{% endfor %}
 
-
 {% endif %}
 {% endfor %}
 # Configure dependencies between compilers