Revert possibly unnecessary changes

Author: WillAyd

.gitattributes

@@ -13,8 +13,3 @@ r/src/RcppExports.cpp linguist-generated=true
 r/src/arrowExports.cpp linguist-generated=true
 r/man/*.Rd linguist-generated=true
 r/NEWS.md merge=union
-python/asv* export-ignore
-python/benchmarks/** export-ignore
-python/examples/** export-ignore
-python/requirements* export-ignore
-python/scripts/** export-ignore

ci/docker/conda-python-pandas.dockerfile

@@ -34,5 +34,3 @@ RUN mamba install -q -y --file arrow/ci/conda_env_sphinx.txt && \
 COPY ci/scripts/install_pandas.sh /arrow/ci/scripts/
 RUN mamba uninstall -q -y numpy && \
     /arrow/ci/scripts/install_pandas.sh ${pandas} ${numpy}
-
-RUN apt-get update && apt-get install -y patchelf

ci/docker/conda-python.dockerfile

@@ -46,5 +46,3 @@ ENV ARROW_ACERO=ON \
     ARROW_SUBSTRAIT=OFF \
     ARROW_TENSORFLOW=ON \
     ARROW_USE_GLOG=OFF
-
-RUN apt-get update && apt-get install -y patchelf