Update overview.md

Author: mssindhurid

articles/attestation/overview.md

@@ -71,7 +71,6 @@ Azure Attestation is the preferred choice for attesting TEEs as it offers the fo
 
 - Unified framework for attesting multiple environments such as TPMs, SGX enclaves and VBS enclaves 
 - Allows creation of custom attestation providers and configuration of policies to restrict token generation
-- Offers [regional shared providers](basic-concepts.md#regional-shared-provider) which can attest with no configuration from users
 - Protects its data while-in use with implementation in an SGX enclave
 - Highly available service