sim: Remove P224 curve references

MCUBoot dropped P224 curve support as
there is little interest in using it.
The simulator threw an error as P224
was never supported, this was removed.

Signed-off-by: Roland Mikhel <roland.mikhel@arm.com>
Change-Id: I96011e9b00dbc3a6f7590db365a5f480d85394e1
diff --git a/sim/src/image.rs b/sim/src/image.rs
index 568cf0a..424f646 100644
--- a/sim/src/image.rs
+++ b/sim/src/image.rs
@@ -1,6 +1,6 @@
 // Copyright (c) 2019-2021 Linaro LTD
 // Copyright (c) 2019-2020 JUUL Labs
-// Copyright (c) 2019-2021 Arm Limited
+// Copyright (c) 2019-2023 Arm Limited
 //
 // SPDX-License-Identifier: Apache-2.0
 
@@ -1853,9 +1853,6 @@
 /// Construct a TLV generator based on how MCUboot is currently configured.  The returned
 /// ManifestGen will generate the appropriate entries based on this configuration.
 fn make_tlv() -> TlvGen {
-    if Caps::EcdsaP224.present() {
-        panic!("Ecdsa P224 not supported in Simulator");
-    }
     let aes_key_size = if Caps::Aes256.present() { 256 } else { 128 };
 
     if Caps::EncKw.present() {