Drupal coding standard issue

Problem/Motivation

The Drupal coding standard issue fixes.

FILE: .../innoppl/Desktop/commerce_razorpay/src/Controller/Controller.php
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FOUND 0 ERRORS AND 3 WARNINGS AFFECTING 3 LINES
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 33 | WARNING | There must be no blank line following an inline
    |         | comment
 62 | WARNING | t() calls should be avoided in classes, use
    |         | dependency injection and $this->t() instead
 66 | WARNING | t() calls should be avoided in classes, use
    |         | dependency injection and $this->t() instead
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FILE: ...ommerce_razorpay/src/PluginForm/OffsiteRedirect/RazorpayForm.php
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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 30 | WARNING | Unused variable $owner.
 34 | WARNING | Unused variable $billing_profile.
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FILE: ...razorpay/src/Plugin/Commerce/PaymentGateway/RazorpayRedirect.php
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FOUND 0 ERRORS AND 4 WARNINGS AFFECTING 4 LINES
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 81 | WARNING | Unused variable $refund_status.
 82 | WARNING | Unused variable $amount_refunded.
 83 | WARNING | Unused variable $service_tax.
 84 | WARNING | Unused variable $amount.
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FILE: .../innoppl/Desktop/commerce_razorpay/commerce_razorpay.routing.yml
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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 6 | WARNING | Open page callback found, please add a comment before
   |         | the line why there is no access restriction
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Time: 60ms; Memory: 4Mb

Proposed resolution

Fix the coding standard issues.

Remaining tasks

Nil

User interface changes

None

API changes

Nil

Data model changes

Nil