Delete build deps submodules

.gitmodules

-[submodule "libunwind"]
-	path = libunwind
-	url = git://git.sv.gnu.org/libunwind.git
-        ignore = all
-[submodule "libpypa"]
-	path = libpypa
-	url = git://github.com/vinzenz/libpypa.git
 [submodule "test/integration/django"]
 	path = test/integration/django
 	url = https://github.com/django/django
 [submodule "test/integration/virtualenv"]
 	path = test/integration/virtualenv
 	url = https://github.com/dropbox/virtualenv
-[submodule "lz4"]
-	path = lz4
-	url = git://github.com/Cyan4973/lz4.git
 [submodule "test/integration/pycrypto"]
 	path = test/integration/pycrypto
 	url = https://github.com/dlitz/pycrypto.git
@@ -28,6 +18,3 @@
 	path = test/integration/pyxl
 	url = https://github.com/dropbox/pyxl.git
 	ignore = untracked
-[submodule "jemalloc"]
-	path = jemalloc
-	url = git://github.com/jemalloc/jemalloc.git

jemalloc @ 46c0af68

-Subproject commit 46c0af68bd248b04df75e4f92d5fb804c3d75340

libpypa @ 64158555

-Subproject commit 641585556b4fec9d6efced9813b45ae72055db7a

libunwind @ 65ac8674

-Subproject commit 65ac86741606e1d87aef75755c699e4fa6884230

lz4 @ 160661c7

-Subproject commit 160661c7a4cbf805f4af74d2e3932a17a66e6ce7