Revert "Add Index-64 API as extended API with _64 suffix for CBLAS"

[langou]

Reverts #846

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (6ffcf32) 0.00% compared to head (82727ab) 0.00%.

❗ Current head 82727ab differs from pull request most recent head 88aa204. Consider uploading reports for the commit 88aa204 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #856   +/-   ##
=======================================
  Coverage    0.00%    0.00%           
=======================================
  Files        1916     1916           
  Lines      188509   188509           
=======================================
  Misses     188509   188509           

Impacted Files	Coverage Δ
SRC/chegv.f	0.00% <ø> (ø)
SRC/chegv_2stage.f	0.00% <ø> (ø)
SRC/chegvd.f	0.00% <ø> (ø)
SRC/chegvx.f	0.00% <ø> (ø)
SRC/chpgv.f	0.00% <ø> (ø)
SRC/chpgvd.f	0.00% <ø> (ø)
SRC/chpgvx.f	0.00% <ø> (ø)
SRC/cpbsv.f	0.00% <ø> (ø)
SRC/cpbsvx.f	0.00% <ø> (ø)
SRC/cpbtf2.f	0.00% <ø> (ø)
... and 92 more

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