Move requirements.txt into git, and fix URLs to be git+http:// ones so pip can use them

ephys_neuropixel/rawdata/code/requirements.txt

@@ -1 +1,2 @@
-/annex/objects/MD5E-s111--4ef423f52ec5f1dba85172bf7d645bdb.txt
+git+https://github.com/INT-NIT/BEP032tools.git@master
+git+https://github.com/SpikeInterface/spikeinterface.git