chore: fix double encoding of path params in case of phone number format (#657)

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# Fixes #

This PR removes encoding in case of phone number format because all path
params are anyway encoded
https://github.com/twilio/twilio-java/blob/4f46e707d6931c50888c26b2dbd3c4452ea076e1/src/main/java/com/twilio/http/Request.java#L213

Preview PR: twilio/twilio-java#871


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Co-authored-by: twilio-dx <[email protected]>

Author: manisha1997

src/main/resources/twilio-java/generate_uri.mustache

@@ -12,10 +12,5 @@
     {{/vendorExtensions.x-is-account-sid}}
 {{/allParams}}
 {{#requiredParams}}
-    {{#vendorExtensions.x-is-phone-number-format}}
-        path = path.replace("{"+"{{baseName}}"+"}", this.{{paramName}}.encode("utf-8"));
-    {{/vendorExtensions.x-is-phone-number-format}}
-    {{^vendorExtensions.x-is-phone-number-format}}
         path = path.replace("{"+"{{baseName}}"+"}", this.{{paramName}}.toString());
-    {{/vendorExtensions.x-is-phone-number-format}}
 {{/requiredParams}}