remove unused rust-toolchain.toml files and panic handler feature flag (#588)

Author: hydrolarus

Cargo.lock

@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: 2022 Google LLC
+# SPDX-FileCopyrightText: 2022-2024 Google LLC
 #
 # SPDX-License-Identifier: CC0-1.0
 
@@ -13,5 +13,5 @@ authors = ["Google LLC"]
 
 [dependencies]
 riscv-rt = "0.11.0"
-bittide-sys = { path = "../../../firmware-support/bittide-sys", features = ["panic-handler"] }
+bittide-sys = { path = "../../../firmware-support/bittide-sys" }
 ufmt = "0.2.0"

Cargo.lock.license

@@ -13,5 +13,5 @@ authors = ["Google LLC"]
 
 [dependencies]
 riscv-rt = "0.11.0"
-bittide-sys = { path = "../../../firmware-support/bittide-sys"}
+bittide-sys = { path = "../../../firmware-support/bittide-sys" }
 ufmt = "0.2.0"

firmware-binaries/clock-control-reg-cpy/rust-toolchain.toml

@@ -13,5 +13,5 @@ authors = ["Google LLC"]
 
 [dependencies]
 riscv-rt = "0.11.0"
-bittide-sys = { path = "../../../firmware-support/bittide-sys", features = ["panic-handler"] }
+bittide-sys = { path = "../../../firmware-support/bittide-sys" }
 ufmt = "0.2.0"

firmware-binaries/clock-control/rust-toolchain.toml

@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: 2022 Google LLC
+# SPDX-FileCopyrightText: 2022-2024 Google LLC
 #
 # SPDX-License-Identifier: CC0-1.0
 
@@ -13,7 +13,6 @@ resolver = "2"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [features]
-panic-handler = []
 default = []
 
 [dependencies]