remove old fmriprep submodule

.gitmodules

@@ -1,5 +0,0 @@
-[submodule "ds003/ds003_fmriprep"]
-	path = ds003/ds003_fmriprep
-	url = http://datasets.datalad.org/labs/poldrack/ds003_fmriprep/.git
-	datalad-id = c6453104-2333-11e9-b719-44a84243ca05
-	datalad-url = ///labs/poldrack/ds003_fmriprep

ds003/ds003_fmriprep

@@ -1 +0,0 @@
-Subproject commit 0fb19201c74636f76f4ee2732bfab4d37616d9d0