[Communication]: Remove Date header added by Hmac Policy (#22574)

* Remove Date header added by Hmac Policy

* Revert Phone number session records

* Revert all recorded sessions

* Remove extra file

* A trivial change to reset PR build

Co-authored-by: JP Chen <jiach@microsoft.com>

sdk/communication/azure-communication-common/README.md

@@ -1,7 +1,7 @@
 # Azure Communication Service Common client library for Java
 
 Azure Communication Common contains data structures commonly used for communicating with Azure Communication Services. 
-It is intended to provide cross cutting concerns, e.g. authentication. 
+It is intended to provide cross-cutting concerns, e.g. authentication. 
 
 ## Getting started
 

sdk/communication/azure-communication-common/src/main/java/com/azure/communication/common/implementation/HmacAuthenticationPolicy.java

@@ -37,7 +37,6 @@
  * HttpPipelinePolicy to append CommunicationClient required headers
  */
 public final class HmacAuthenticationPolicy implements HttpPipelinePolicy {
-    private static final String DATE_HEADER = "date";
     private static final String X_MS_DATE_HEADER = "x-ms-date";
     private static final String X_MS_STRING_TO_SIGN_HEADER = "x-ms-hmac-string-to-sign-base64";
     private static final String HOST_HEADER = "host";
@@ -122,7 +121,6 @@ private Map<String, String> addAuthenticationHeaders(final URL url,
         String utcNow = OffsetDateTime.now(ZoneOffset.UTC)
             .format(HMAC_DATETIMEFORMATTER_PATTERN);
         headers.put(X_MS_DATE_HEADER, utcNow);
-        headers.put(DATE_HEADER, utcNow);
         headers.put(HOST_HEADER, url.getHost());
         addSignatureHeader(url, httpMethod, headers);
         return headers;