Remove obsolete sys_osml widget.

[Lightning11wins]

According to our discussion on Riot, this widget is obsolete and was never fully implemented, so I've removed it to reduce clutter in the codebase.

[greptile-apps]

Greptile Summary

This PR removes the sys_osml widget, which was never fully implemented, from both the server-side C driver and the client-side JavaScript file, along with its build and initialization hooks.

• wgtdrv_sys_osml.c and htdrv_sys_osml.js are deleted entirely; both contained only stubs with no functional logic.
• centrallix/Makefile.in and centrallix/wgtr/wgtr.c are updated to drop the build artifact and the wgtosmlInitialize() call respectively. A grep across the full repo confirms no remaining references to sys_osml or sys-osml.

Confidence Score: 5/5

Safe to merge — the deleted widget was never fully implemented and all references have been removed from every layer of the stack.

All four touched locations (JS file, C driver, Makefile, init call) are consistent stub removals. A full-repo search confirms no dangling references to sys_osml, sys-osml, or wgtosml remain anywhere in the codebase.

No files require special attention.

Important Files Changed

Filename	Overview
centrallix-os/sys/js/htdrv_sys_osml.js	JS client file for sys_osml widget deleted entirely; no remaining references in the repo.
centrallix/wgtr/wgtdrv_sys_osml.c	C server-side widget driver deleted entirely; contained only stub implementations with no logic.
centrallix/Makefile.in	Removes wgtdrv_sys_osml.o from the XWGTRDRIVERS build list; no other changes.
centrallix/wgtr/wgtr.c	Removes the wgtosmlInitialize() call from wgtrInitialize() and trailing blank lines at EOF.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[wgtrInitialize] -->|calls| B[wgtosmlInitialize removed]
    A -->|calls| C[wgttabInitialize]
    A -->|calls| D[wgttblInitialize]
    B -->|registered| E[wgtrRegisterDriver: System:OSML Driver removed]
    B -->|registered type| F[wgtrAddType: sys-osml removed]
    G[Makefile.in] -->|compiled| H[wgtdrv_sys_osml.o removed]
    I[htdrv_sys_osml.js removed] -->|client-side stub| J[cn_init function]

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_{Reviews (1): Last reviewed commit: "Remove obsolete sys_osml widget." | Re-trigger Greptile}

[Lightning11wins]

This PR is ready for human review.