[Clang-Tidy][docs] Remove Technical Details not relevant to users

Co-authored-by: Baranov Victor <[email protected]>

Author: HARSHIL2836R

clang-tools-extra/docs/clang-tidy/index.rst

@@ -379,10 +379,8 @@ The :program:`clang-tidy-diff.py` script allows you to run :program:`clang-tidy`
 on the lines that have been modified in your working directory or in a
 specific diff. Importantly, clang-tidy-diff only reports diagnostics for changed
 lines; :program:`clang-tidy` still analyzes the entire file and filters out
-unchanged lines after analysis, so this does not improve performance. The script
-is essentially a wrapper that parses diff output and passes it to
-:program:`clang-tidy` with the ``--line-filter`` option, which performs all the
-actual filtering. This is particularly useful for code reviews and continuous
+unchanged lines after analysis, so this does not improve performance. This is
+particularly useful for code reviews and continuous
 integration, as it focuses analysis on the changed code rather than the entire
 codebase.