Remove ParserOutput::hasDynamicContent(), deprecated since 1.38

This was just an alias for ::hasReducedExpiry(), introduced in 1.37.

Bug: T305161
Change-Id: I3f6caeb9ae4b2164824f9bed274e76d6e61ad7cc

RELEASE-NOTES-1.41

@@ -360,6 +360,7 @@ because of Phabricator reports.
 * The following methods in the ParserOutput class, deprecated since 1.38, have
   been removed:
   - ::addWarning()
+  - ::hasDynamicContent()
   - ::hideNewSection()
   - ::preventClickjacking()
 * OutputPage::allowClickjacking() and ::preventClickjacking(), deprecated

includes/parser/ParserOutput.php

@@ -2126,17 +2126,6 @@ class ParserOutput extends CacheTime implements ContentMetadataCollector {
 		return $this->getCacheExpiry() < $parserCacheExpireTime;
 	}
 
-	/**
-	 * @see ParserOutput::hasReducedExpiry
-	 * @return bool
-	 * @since 1.25
-	 * @deprecated since 1.38: use ::hasReducedExpiry()
-	 */
-	public function hasDynamicContent(): bool {
-		wfDeprecated( __METHOD__, '1.38' );
-		return $this->hasReducedExpiry();
-	}
-
 	/**
 	 * Set the prevent-clickjacking flag.  If set this will cause an
 	 * `X-Frame-Options` header appropriate for edit pages to be sent.