Remove extra semi colon from deeplearning/projects/flashlight/flashli…

…ght/fl/tensor/Types.h

Summary:
`-Wextra-semi` or `-Wextra-semi-stmt`

If the code compiles, this is safe to land.

Reviewed By: dmm-fb

Differential Revision: D52969077

fbshipit-source-id: 515d89f02022cd74b490e2f16817773f4f13169c

flashlight/fl/tensor/Types.h

@@ -67,7 +67,7 @@ struct dtype_traits;
     static const char* getName() {                                     \
       return STRING_NAME;                                              \
     }                                                                  \
-  };
+  }
 
 FL_TYPE_TRAIT(float, dtype::f32, dtype::f32, "float");
 FL_TYPE_TRAIT(double, dtype::f64, dtype::f32, "double");