* Clean up demote program write lock feature (#21949) * Clean up demote program write lock feature * fix test (cherry picked from commit 6ff0be6a82cae7a28cf1ba3c22b183d4004e9085) # Conflicts: # programs/bpf_loader/src/syscalls.rs # runtime/src/accounts.rs * resolve conflicts Co-authored-by: Justin Starry <justin@solana.com>