Removed .md and made class change

Author: aegilops

java/ql/src/experimental/Security/CWE/CWE-078/CommandInjectionRuntimeExec.md

@@ -14,9 +14,7 @@
 import DataFlow::PathGraph
 import CommandInjectionRuntimeExec
 
-class RemoteSource extends Source {
-  RemoteSource() { this instanceof RemoteFlowSource }
-}
+class RemoteSource extends Source instanceof RemoteFlowSource {}
 
 from
   DataFlow::PathNode source, DataFlow::PathNode sink, ExecTaintConfiguration2 conf,

java/ql/src/experimental/Security/CWE/CWE-078/CommandInjectionRuntimeExec.ql

@@ -15,9 +15,7 @@
 import DataFlow::PathGraph
 import CommandInjectionRuntimeExec
 
-class LocalSource extends Source {
-  LocalSource() { this instanceof LocalUserInput }
-}
+class LocalSource extends Source instanceof LocalUserInput {}
 
 from
   DataFlow::PathNode source, DataFlow::PathNode sink, ExecTaintConfiguration2 conf,