Revert "Code analysis recommended this"

This reverts commit 1f8dd72606.

NadekoBot/Classes/NadekoStats.cs

@@ -14,7 +14,7 @@ using System.Timers;
 
 namespace NadekoBot
 {
-    public class NadekoStats : IDisposable
+    public class NadekoStats
     {
         public static NadekoStats Instance { get; } = new NadekoStats();
 
@@ -231,20 +231,5 @@ namespace NadekoBot
                 }
             }).ConfigureAwait(false);
         }
-
-        public void Dispose()
-        {
-            Dispose(true);
-            GC.SuppressFinalize(this);
-        }
-
-        private void Dispose(bool disposing)
-        {
-            if (disposing)
-            {
-                carbonClient.Dispose();
-            }
-
-        }
     }
 }

NadekoBot/Modules/Searches/Commands/EvalCommand.cs

@@ -49,11 +49,11 @@ namespace NadekoBot.Modules.Searches.Commands
                 string result = parser.Parse(expression).ToString();
                 return result;
             }
-            catch (OverflowException)
+            catch (OverflowException e)
             {
                 return $"Overflow error on {expression}";
             }
-            catch (FormatException)
+            catch (FormatException e)
             {
                 return $"\"{expression}\" was not formatted correctly";
             }