Delete mixed case file

I had to delete both versions of the file before adding the
lowercase version of the file back.

Author: coopers

Diff for: java/1143-Longest-Common-Subsequence.java

@@ -38,4 +38,4 @@ public int longestCommonSubsequence(String text1, String text2) {
 
         return dp[0][0];
     }
-}
+}