Revert "test against main branches (do not merge)"

This reverts commit 596894d.

requirements.txt

@@ -13,14 +13,14 @@ git+https://github.com/mpi4py/mpi4py#egg=mpi4py
 # The following packages will be git cloned by emirge:
 --editable git+https://github.com/inducer/pymbolic.git#egg=pymbolic
 #--editable git+https://github.com/inducer/pyopencl.git#egg=pyopencl
---editable git+https://github.com/inducer/loopy.git#egg=loopy
+--editable git+https://github.com/illinois-ceesd/loopy.git@production#egg=loopy
 --editable git+https://github.com/inducer/dagrt.git#egg=dagrt
 --editable git+https://github.com/inducer/leap.git#egg=leap
 --editable git+https://github.com/inducer/modepy.git#egg=modepy
---editable git+https://github.com/inducer/arraycontext.git#egg=arraycontext
---editable git+https://github.com/inducer/meshmode.git#egg=meshmode
---editable git+https://github.com/inducer/grudge.git#egg=grudge
---editable git+https://github.com/inducer/pytato.git#egg=pytato
+--editable git+https://github.com/illinois-ceesd/arraycontext.git@production#egg=arraycontext
+--editable git+https://github.com/illinois-ceesd/meshmode.git@production#egg=meshmode
+--editable git+https://github.com/illinois-ceesd/grudge.git@production#egg=grudge
+--editable git+https://github.com/illinois-ceesd/pytato.git@production#egg=pytato
 --editable git+https://github.com/pyrometheus/pyrometheus.git@tulio/entropy#egg=pyrometheus
 --editable git+https://github.com/illinois-ceesd/logpyle.git#egg=logpyle
 --editable git+https://github.com/kaushikcfd/feinsum.git#egg=feinsum