Remove unnecessary casts

spring-erlang/src/main/java/org/springframework/util/exec/Background.java

@@ -121,7 +121,7 @@ public class Background {
             (appendErr == true ? ">>" : " >") +
             Escape.escape(errFile.getAbsolutePath())); 
 
-        Runtime.getRuntime().exec((String [])tmpCmd.toArray(cmd));
+        Runtime.getRuntime().exec(tmpCmd.toArray(cmd));
     }
 
     public static void main(String[] args) throws Exception {

spring-erlang/src/main/java/org/springframework/util/exec/Execute.java

@@ -327,7 +327,7 @@ public class Execute {
             String key = env[i].substring(0, pos+1);
             int size = osEnv.size();
             for (int j = 0; j < size; j++) {
-                if (((String)osEnv.elementAt(j)).startsWith(key)) {
+                if ((osEnv.elementAt(j)).startsWith(key)) {
                     osEnv.removeElementAt(j);
                     break;
                 }