[Algorithm] Remove unused parser and TableView utilities

The header-only utilities Parser.h (ForwardParser/ReverseParser),
TableView.h, O2FormatParser.h and PageParser.h have no users: the only
o2::algorithm:: symbol referenced anywhere outside the module (across
AliceO2 and O2Physics) is flatten, from FlattenRestore.h. These four
headers are exercised solely by their own unit tests, and the
#include "Algorithm/Parser.h" lines in GPU/TPC sources reference none of
their symbols.

Remove the headers, their tests, the corresponding o2_add_test entries,
and the stale includes. RangeTokenizer.h, FlattenRestore.h, HeaderStack.h
and mpl_tools.h (the parts actually in use) are untouched.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: 2 people

Algorithm/CMakeLists.txt

@@ -11,36 +11,12 @@
 
 o2_add_header_only_library(Algorithm INTERFACE_LINK_LIBRARIES O2::Headers)
 
-o2_add_test(o2formatparser
-            SOURCES test/o2formatparser.cxx
-            COMPONENT_NAME Algorithm
-            PUBLIC_LINK_LIBRARIES O2::Algorithm
-            LABELS algorithm)
-
 o2_add_test(headerstack
             SOURCES test/headerstack.cxx
             COMPONENT_NAME Algorithm
             PUBLIC_LINK_LIBRARIES O2::Algorithm
             LABELS algorithm)
 
-o2_add_test(parser
-            SOURCES test/parser.cxx
-            COMPONENT_NAME Algorithm
-            PUBLIC_LINK_LIBRARIES O2::Algorithm
-            LABELS algorithm)
-
-o2_add_test(tableview
-            SOURCES test/tableview.cxx
-            COMPONENT_NAME Algorithm
-            PUBLIC_LINK_LIBRARIES O2::Algorithm
-            LABELS algorithm)
-
-o2_add_test(pageparser
-            SOURCES test/pageparser.cxx
-            COMPONENT_NAME Algorithm
-            PUBLIC_LINK_LIBRARIES O2::Algorithm
-            LABELS algorithm)
-
 o2_add_test(mpl_tools
             SOURCES test/test_mpl_tools.cxx
             COMPONENT_NAME Algorithm