[clang-tools-extra] Revert "[clang-doc] add ftime profiling" (PR #100251)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `premerge-monolithic-linux` running on `premerge-linux-1` while building `clang-tools-extra` at step 7 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/153/builds/4021

Here is the relevant piece of the build log for the reference:
```
Step 7 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'Clang Tools :: clang-doc/namespace.cpp' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
Emiting docs in html format.
Mapping decls...
Collecting infos...
Reducing 9 infos...
Generating docs...
Generating assets for docs...
Emiting docs in md format.
Mapping decls...
Collecting infos...
Reducing 9 infos...
Generating docs...
Generating assets for docs...

--
Command Output (stderr):
--
RUN: at line 1: rm -rf /build/buildbot/premerge-monolithic-linux/build/tools/clang/tools/extra/test/clang-doc/Output/namespace.cpp.tmp && mkdir -p /build/buildbot/premerge-monolithic-linux/build/tools/clang/tools/extra/test/clang-doc/Output/namespace.cpp.tmp
+ rm -rf /build/buildbot/premerge-monolithic-linux/build/tools/clang/tools/extra/test/clang-doc/Output/namespace.cpp.tmp
+ mkdir -p /build/buildbot/premerge-monolithic-linux/build/tools/clang/tools/extra/test/clang-doc/Output/namespace.cpp.tmp
RUN: at line 2: clang-doc --format=html --output=/build/buildbot/premerge-monolithic-linux/build/tools/clang/tools/extra/test/clang-doc/Output/namespace.cpp.tmp --executor=standalone /build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc/namespace.cpp
+ clang-doc --format=html --output=/build/buildbot/premerge-monolithic-linux/build/tools/clang/tools/extra/test/clang-doc/Output/namespace.cpp.tmp --executor=standalone /build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc/namespace.cpp
Error while trying to load a compilation database:
Could not auto-detect compilation database for file "/build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc/namespace.cpp"
No compilation database found in /build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc or any parent directory
fixed-compilation-database: Error while opening fixed database: No such file or directory
json-compilation-database: Error while opening JSON database: No such file or directory
Running without flags.
RUN: at line 3: clang-doc --format=md --output=/build/buildbot/premerge-monolithic-linux/build/tools/clang/tools/extra/test/clang-doc/Output/namespace.cpp.tmp --executor=standalone /build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc/namespace.cpp
+ clang-doc --format=md --output=/build/buildbot/premerge-monolithic-linux/build/tools/clang/tools/extra/test/clang-doc/Output/namespace.cpp.tmp --executor=standalone /build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc/namespace.cpp
Error while trying to load a compilation database:
Could not auto-detect compilation database for file "/build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc/namespace.cpp"
No compilation database found in /build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc or any parent directory
fixed-compilation-database: Error while opening fixed database: No such file or directory
json-compilation-database: Error while opening JSON database: No such file or directory
Running without flags.
RUN: at line 4: FileCheck /build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc/namespace.cpp < /build/buildbot/premerge-monolithic-linux/build/tools/clang/tools/extra/test/clang-doc/Output/namespace.cpp.tmp/index_json.js -check-prefix=JSON-INDEX
+ FileCheck /build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc/namespace.cpp -check-prefix=JSON-INDEX
/build/buildbot/premerge-monolithic-linux/llvm-project/clang-tools-extra/test/clang-doc/namespace.cpp:195:21: error: JSON-INDEX-NEXT: expected string not found in input
// JSON-INDEX-NEXT: "USR": "{{([0-9A-F]{40})}}",
                    ^
<stdin>:2:8: note: scanning from here
return{
       ^
<stdin>:13:2: note: possible intended match here
 "Name": "AnonClass",
...

```

https://github.com/llvm/llvm-project/pull/100251