.cargo/audit: Remove deprecated packages field

 * Remove the packages field that has been deprecated in newer versions
   of cargo audit.
 * Remove the arch filed to log error for all targets.

Signed-off-by: Tomás González <tomasagustin.gonzalezorlando@arm.com>

Author: tgonzalezorlandoarm

.cargo/audit.toml

@@ -19,12 +19,8 @@ show_tree = true # Show inverse dependency trees along with advisories
 
 # Target Configuration
 [target]
-arch = "x86_64" # Ignore advisories for CPU architectures other than this one
 os = "linux" # Ignore advisories for operating systems other than this one
 
-[packages]
-source = "all" # "all", "public" or "local"
-
 [yanked]
 enabled = true # Warn for yanked crates in Cargo.lock
 update_index = true # Auto-update the crates.io index