pylintrc_travis: Enable check for unnecessary-semicolon and fix issue (#2333)

addons/misra.py

@@ -2391,7 +2391,7 @@ class MisraChecker:
                     rule.misra_severity = res.group(1)
                     have_severity = True
                 else:
-                    severity_loc += 1;
+                    severity_loc += 1
 
                 # Only look for severity on the Rule line
                 # or the next non-blank line after

pylintrc_travis

@@ -4,7 +4,7 @@ enable=mixed-indentation,
        trailing-whitespace,
        print-statement,
        literal-comparison,
-       #unnecessary-semicolon,
+       unnecessary-semicolon,
        #bad-indentation
 [REPORTS]
 reports=no