chore(lint): remove unused lint checks

Now that we have --noImplicitAny we don't need these checks for explicit types in specific locations.

Also re-enable the check to disallow keywords as variable names.

Author: alexeagle

tools/tslint/requireParameterTypeRule.ts

@@ -3,6 +3,6 @@
       "requireInternalWithUnderscore": true,
       "duplicateModuleImport": true,
       "semicolon": true,
-      "variable-name": false
+      "variable-name": [true, "ban-keywords"]
     }
 }