Remove implicit injection

This is required to clear the implicit-injection deprecation on Ember 3.27.

This may need to be released as a semver major because this version of `fastboot` will only work with versions of `ember-cli-fastboot` after #841

Author: ef4

packages/fastboot/src/fastboot-info.js

@@ -38,6 +38,5 @@ module.exports = class FastBootInfo {
    */
   register(instance) {
     instance.register('info:-fastboot', this, { instantiate: false });
-    instance.inject('service:fastboot', '_fastbootInfo', 'info:-fastboot');
   }
 };