chore: clean up bitmap and CMake compatibility declarations (#193)

* docs: remove bitmap global index compatibility note

* build(cmake): retain CMake 3.22 compatibility

Author: zjw1111

README.md

@@ -44,11 +44,6 @@ Paimon C++ currently provides:
 - **Compatibility**: compatibility with Apache Paimon Java format and communication protocols,
   including commit messages, data splits, and manifests.
 
-> **Bitmap global index compatibility:** Java Paimon now uses a dedicated bitmap global index
-> format instead of the previously shared wrapped bitmap file index format.
-> Paimon C++ therefore currently treats the `bitmap` global index type as unsupported. The legacy
-> implementation remains in the codebase pending migration to the Java-compatible format.
-
 Note: Linux `x86_64` and `aarch64` builds are supported and verified in CI. See the supported
 platform matrix in [docs/source/building.rst](docs/source/building.rst) for other platforms.
 

cmake_modules/BuildAwsAuth.cmake

@@ -34,7 +34,6 @@ function(paimon_add_s2n_project)
     externalproject_add(s2n_ep
                         URL ${S2N_URL}
                         URL_HASH SHA256=${PAIMON_AWS_S2N_BUILD_SHA256_CHECKSUM}
-                        DOWNLOAD_EXTRACT_TIMESTAMP TRUE
                         CMAKE_ARGS ${EP_COMMON_CMAKE_ARGS}
                                    -DCMAKE_C_FLAGS=${S2N_C_FLAGS}
                                    -DCMAKE_CXX_FLAGS=${S2N_CXX_FLAGS}
@@ -89,7 +88,6 @@ function(paimon_add_aws_c_project
     externalproject_add(${NAME}_ep
                         URL ${URL}
                         URL_HASH SHA256=${CHECKSUM}
-                        DOWNLOAD_EXTRACT_TIMESTAMP TRUE
                         CMAKE_ARGS ${EP_COMMON_CMAKE_ARGS}
                                    -DCMAKE_INSTALL_PREFIX=${AWS_AUTH_PREFIX}
                                    -DCMAKE_INSTALL_LIBDIR=${AWS_AUTH_INSTALL_LIBDIR}