py-pkgconfig: update to 1.5.1

- switch to PyPI since the project now uses "poetry" and the GitHub
    tarball does not contain a setup.py file anymore
- remove tests as they are not part of the PyPI tarball

python/py-pkgconfig/Portfile

@@ -2,12 +2,10 @@
 
 PortSystem              1.0
 PortGroup               python 1.0
-PortGroup               github 1.0
 
-github.setup            matze pkgconfig 1.4.0 v
 name                    py-pkgconfig
-python.versions         27 34 35 36 37
-python.default_version  27
+version                 1.5.1
+revision                0
 platforms               darwin
 license                 MIT
 maintainers             nomaintainer
@@ -20,23 +18,25 @@ long_description        ${description} It can be used to check if a package\
                         requirements, query CFLAGS and LDFLAGS, and parse the\
                         output to build extensions with setup.py.
 
-checksums               rmd160  ae9559c798895121fd2feed046c0810b4894ac4e \
-                        sha256  3eadb048774e30e960f67f9634c5c45029dbe942ae6ea1169104265791446712 \
-                        size    5484
+homepage                https://github.com/matze/pkgconfig
+master_sites            pypi:[string index ${python.rootname} 0]/${python.rootname}
+distname                ${python.rootname}-${version}
+checksums               rmd160  35ae7de4d7518cbb11e13cd41b10ea7bab87dd2a \
+                        sha256  97bfe3d981bab675d5ea3ef259045d7919c93897db7d3b59d4e8593cba8d354f \
+                        size    5611
+
+python.versions         27 34 35 36 37
 
 if {${name} ne ${subport}} {
     depends_build-append    port:py${python.version}-setuptools
     depends_run-append      port:pkgconfig
 
-    depends_test-append     port:py${python.version}-nose
-    test.run                yes
-    test.cmd                nosetests-${python.branch}
-    test.target
-
     post-destroot {
         set DOCDIR ${destroot}${prefix}/share/doc/${subport}
         xinstall -d ${DOCDIR}
-        file copy ${worksrcpath}/LICENSE ${DOCDIR}
+        xinstall -m 0644 -W ${worksrcpath} LICENSE README.rst \
+            ${DOCDIR}
     }
+
     livecheck.type    none
 }