fix: update the readRow attempt timeouts to be inline with unary rpcs instead of scans (#1834)

* fix: update the readRow attempt timeouts to be inline with unary rpcs instead of scans

Change-Id: Id4622bc2c5c657146c7be78ae474cac3f5c0c3b4

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: igorbernstein2

google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/EnhancedBigtableStubSettings.java

@@ -645,16 +645,10 @@ private Builder() {
           .setIdleTimeout(Duration.ofMinutes(5))
           .setWaitTimeout(Duration.ofMinutes(5));
 
-      // Point reads should use same defaults as streaming reads, but with a shorter timeout
       readRowSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       readRowSettings
           .setRetryableCodes(readRowsSettings.getRetryableCodes())
-          .setRetrySettings(
-              readRowsSettings()
-                  .getRetrySettings()
-                  .toBuilder()
-                  .setTotalTimeout(IDEMPOTENT_RETRY_SETTINGS.getTotalTimeout())
-                  .build());
+          .setRetrySettings(IDEMPOTENT_RETRY_SETTINGS);
 
       sampleRowKeysSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       sampleRowKeysSettings