remove the submodules so that the release process can be simplified

Author: shroffk

.gitmodules

@@ -14,19 +14,3 @@
 	path = normativeTypesJava
 	url = https://github.com/epics-base/normativeTypesJava
     branch = master
-[submodule "pvaClientJava"]
-	path = pvaClientJava
-	url = https://github.com/epics-base/pvaClientJava
-    branch = master
-[submodule "pvDatabaseJava"]
-	path = pvDatabaseJava
-	url = https://github.com/epics-base/pvDatabaseJava
-    branch = master
-[submodule "exampleJava"]
-	path = exampleJava
-	url = https://github.com/epics-base/exampleJava
-    branch = master
-[submodule "directoryService"]
-	path = directoryService
-	url = https://github.com/epics-base/directoryService
-    branch = master