chore: clean up owlbot post-processing (#5856)

owlbot.py

@@ -32,23 +32,6 @@
 
 php.owlbot_main(src=src, dest=dest)
 
-# document and utilize apiEndpoint instead of serviceAddress
-s.replace(
-    "**/Gapic/*GapicClient.php",
-    r"'serviceAddress' =>",
-    r"'apiEndpoint' =>")
-s.replace(
-    "**/Gapic/*GapicClient.php",
-    r"@type string \$serviceAddress\n\s+\*\s+The address",
-    r"""@type string $serviceAddress
-     *           **Deprecated**. This option will be removed in a future major release. Please
-     *           utilize the `$apiEndpoint` option instead.
-     *     @type string $apiEndpoint
-     *           The address""")
-s.replace(
-    "**/Gapic/*GapicClient.php",
-    r"\$transportConfig, and any \$serviceAddress",
-    r"$transportConfig, and any `$apiEndpoint`")
 
 ### [START] protoc backwards compatibility fixes
 
@@ -60,12 +43,6 @@
      */
     private $""")
 
-# prevent proto messages from being marked final
-s.replace(
-    "src/**/V*/**/*.php",
-    r"final class",
-    r"class")
-
 # Replace "Unwrapped" with "Value" for method names.
 s.replace(
     "src/**/V*/**/*.php",