- remove libczirw-sys submodule

Cargo.toml

@@ -17,22 +17,9 @@ categories = ["multimedia::images", "science"]
 
 [profile.test]
 inherits = "release"
-# Full debug info goes in the TEST profile only (readable cargo-test
-# backtraces). It must NOT be in the release profile: on ELF targets
-# (Linux/musl wheels) the DWARF gets embedded in the .so (~160 MB, over
-# PyPI's 100 MB limit) - MSVC puts it in a sidecar .pdb and the
-# apple/zig link path drops it, which is why only the Linux wheels were
-# bloated.
 debug = true
 
 [profile.release]
 
 [profile.dev.package.backtrace]
 opt-level = 3
-
-# Build against the libczirw-sys checkout in the submodule of that name:
-# its fixes (self-contained cmake build via vendored Eigen, msvc C runtime
-# alignment for xwin, bindgen flags for zig's libc++) are not yet published
-# to crates.io; drop this patch once a release containing them is available
-[patch.crates-io]
-libczirw-sys = { path = "libczirw-sys" }