ARROW-7039: [Python] Fix pa.table/record_batch typecheck to work without pandas

[jorisvandenbossche]

No description provided.

[jorisvandenbossche]

@ursabot crossbow submit docker-python-3.6-nopandas

[ursabot]

AMD64 Conda Crossbow Submit (#74755) builder has been succeeded.

Revision: b376c3f

Submitted crossbow builds: ursa-labs/crossbow @ ursabot-292

Task	Status
docker-python-3.6-nopandas

[github-actions]

https://issues.apache.org/jira/browse/ARROW-7039

[codecov-io]

Codecov Report

Merging #5764 into master will decrease coverage by 23.2%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           master    #5764       +/-   ##
===========================================
- Coverage   88.99%   65.78%   -23.21%     
===========================================
  Files        1006      543      -463     
  Lines      137241    77017    -60224     
  Branches     1501        0     -1501     
===========================================
- Hits       122134    50669    -71465     
- Misses      14742    26348    +11606     
+ Partials      365        0      -365

Impacted Files	Coverage Δ
python/pyarrow/table.pxi	86.93% <100%> (+0.4%)	⬆️
python/pyarrow/tests/test_table.py	96.55% <100%> (+0.01%)	⬆️
cpp/src/arrow/util/memory.h	0% <0%> (-100%)	⬇️
cpp/src/parquet/internal_file_decryptor.h	0% <0%> (-100%)	⬇️
cpp/src/arrow/filesystem/path_tree.h	0% <0%> (-100%)	⬇️
cpp/src/gandiva/date_utils.h	0% <0%> (-100%)	⬇️
cpp/src/arrow/util/memory.cc	0% <0%> (-100%)	⬇️
cpp/src/gandiva/decimal_type_util.h	0% <0%> (-100%)	⬇️
cpp/src/arrow/compute/logical_type.h	0% <0%> (-100%)	⬇️
cpp/src/arrow/compute/kernels/add.h	0% <0%> (-100%)	⬇️
... and 732 more

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[kszucs]

LGTM