rm LSOracle

We've never used it and the IDEA program is over.

Signed-off-by: Matt Liberty <[email protected]>

Author: maliberty

.gitmodules

@@ -4,6 +4,3 @@
 [submodule "tools/OpenROAD"]
 	path = tools/OpenROAD
 	url = ../OpenROAD.git
-[submodule "tools/LSOracle"]
-	path = tools/LSOracle
-	url = ../../The-OpenROAD-Project/LSOracle.git