Remove other unnecessary statements

index.bs

@@ -4007,10 +4007,9 @@ creation.
     </xmp>
 
 : Client extension processing
-:: This extension can only be used during {{CredentialsContainer/create()}}. If the client supports the Authenticator Selection
-    Extension, it MUST use the first available authenticator whose AAGUID is present in the {{AuthenticatorSelectionList}}. If
-    none of the available authenticators match a provided AAGUID, the client MUST select an authenticator from among the
-    available authenticators to generate the credential.
+:: If the client supports the Authenticator Selection Extension, it MUST use the first available authenticator whose AAGUID is
+    present in the {{AuthenticatorSelectionList}}. If none of the available authenticators match a provided AAGUID, the client
+    MUST select an authenticator from among the available authenticators to generate the credential.
 
 : Client extension output
 :: Returns the value `true` to indicate to the RP that the extension was acted upon.
@@ -4283,10 +4282,9 @@ as candidates to be employed in a [=registration=] ceremony.
     The FAR is the maximum false rejection rate for a biometric authenticator allowed by the [=[RP]=].
 
 : Client extension processing
-:: This extension can only be used during {{CredentialsContainer/create()}}. If the client supports this
-    extension, it MUST NOT use a biometric authenticator whose FAR or FRR does not match the bounds as provided.  The client
-    can obtain information about the biometric authenticator's performance from authoritative sources such as the FIDO
-    Metadata Service [[FIDOMetadataService]] (see Sec. 3.2 of [[FIDOUAFAuthenticatorMetadataStatements]]).  
+:: If the client supports this extension, it MUST NOT use a biometric authenticator whose FAR or FRR does not match the
+    bounds as provided.  The client can obtain information about the biometric authenticator's performance from authoritative
+    sources such as the FIDO Metadata Service [[FIDOMetadataService]] (see Sec. 3.2 of [[FIDOUAFAuthenticatorMetadataStatements]]).
 
 : Client extension output
 :: Returns the JSON value `true` to indicate to the RP that the extension was acted upon