Remove remaining standalone documentation pages per review feedback

- Delete SpecializedProblems.md - information should come from docstrings
- Delete EnsembleAnalysis.md - functions already have proper docstrings
- Delete AlgorithmTraits.md - algorithm traits should be documented via docstrings
- Update pages.jl to remove references to deleted documentation files
- Documentation builds successfully with streamlined approach

This completes the transition to a docstring-only documentation approach,
ensuring API documentation is maintained directly in source code rather
than separate markdown files.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: ChrisRackauckas

docs/pages.jl

@@ -5,14 +5,11 @@ pages = [
     "Interfaces" => Any[
         "interfaces/Array_and_Number.md",
         "interfaces/Problems.md",
-        "interfaces/SpecializedProblems.md",
         "interfaces/SciMLFunctions.md",
         "interfaces/Algorithms.md",
-        "interfaces/AlgorithmTraits.md",
         "interfaces/Solutions.md",
         "interfaces/Init_Solve.md",
         "interfaces/Ensembles.md",
-        "interfaces/EnsembleAnalysis.md",
         "interfaces/ClockSystem.md",
         "interfaces/Common_Keywords.md",
         "interfaces/Differentiation.md",