Remove the external SSAPy-Data gitmodule and modify the .gitattribute…

…s file. This is preparing for using git lfs to store the large data files.

.gitattributes

@@ -1,10 +1,9 @@
-ssapy/data/egm96.egm filter=lfs diff=lfs merge=lfs -text
-ssapy/data/egm96.egm.cof filter=lfs diff=lfs merge=lfs -text
-ssapy/data/egm2008.egm filter=lfs diff=lfs merge=lfs -text
-ssapy/data/egm2008.egm.cof filter=lfs diff=lfs merge=lfs -text
-ssapy/data/de430.bsp filter=lfs diff=lfs merge=lfs -text
-ssapy/data/gggrx_1200a_sha.lbl filter=lfs diff=lfs merge=lfs -text
-ssapy/data/gggrx_1200a_sha.tab filter=lfs diff=lfs merge=lfs -text
-ssapy/data/moon_pa_de440_200625.bpc filter=lfs diff=lfs merge=lfs -text
 *.png filter=lfs diff=lfs merge=lfs -text
 *.jpg filter=lfs diff=lfs merge=lfs -text
+*.egm* filter=lfs diff=lfs merge=lfs -text
+gggrx_1200a_sha* filter=lfs diff=lfs merge=lfs -text
+*.bpc filter=lfs diff=lfs merge=lfs -text
+*.bsp filter=lfs diff=lfs merge=lfs -text
+*.dbf filter=lfs diff=lfs merge=lfs -text
+*.shp filter=lfs diff=lfs merge=lfs -text
+*.shx filter=lfs diff=lfs merge=lfs -text

.gitmodules

@@ -1,6 +1,3 @@
 [submodule "pybind11"]
 	path = pybind11
 	url = https://github.com/pybind/pybind11.git
-[submodule "ssapy/data"]
-	path = ssapy/data
-	url = https://github.com/LLNL/SSAPy-Data.git