Revert DbClientCommonAttributesGetter to original state

- Removed getDbSystemName() and getResponseStatusCode() methods
- Undeprecated getDbSystem() and getResponseStatus() methods
- This deprecated interface now stands alone with its original API
- New method names are only in DbClientAttributesGetter where they belong

Author: trask

instrumentation-api-incubator/src/main/java/io/opentelemetry/instrumentation/api/incubator/semconv/db/DbClientCommonAttributesGetter.java

@@ -15,15 +15,7 @@
 @Deprecated
 public interface DbClientCommonAttributesGetter<REQUEST, RESPONSE> {
 
-  /**
-   * @deprecated Use {@link #getDbSystemName(REQUEST)} instead.
-   */
-  @Deprecated
-  default String getDbSystem(REQUEST request) {
-    return getDbSystemName(request);
-  }
-
-  String getDbSystemName(REQUEST request);
+  String getDbSystem(REQUEST request);
 
   @Deprecated
   @Nullable
@@ -40,17 +32,8 @@ default String getConnectionString(REQUEST request) {
     return null;
   }
 
-  /**
-   * @deprecated Use {@link #getResponseStatusCode(RESPONSE, Throwable)} instead.
-   */
-  @Deprecated
   @Nullable
   default String getResponseStatus(@Nullable RESPONSE response, @Nullable Throwable error) {
-    return getResponseStatusCode(response, error);
-  }
-
-  @Nullable
-  default String getResponseStatusCode(@Nullable RESPONSE response, @Nullable Throwable error) {
     return null;
   }
 }