remove appveyor and landscape

README.md

@@ -1,12 +1,10 @@
 <img src="docs/sphinx/source/_images/pvlib_logo_horiz.png" width="600">
 
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-[![Code Health](https://landscape.io/github/pvlib/pvlib-python/master/landscape.svg?style=flat)](https://landscape.io/github/pvlib/pvlib-python/master)
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