Remove goto_check_java

[tautschnig]

The Java front-end instruments checks via other means. The only
remaining use of goto_check_javat was handling of the no-assertions
and no-assumptions command-line options, which is now handled by other
means.

• Each commit message has a non-empty body, explaining why the change was made.
• Methods or procedures I have added are documented, following the guidelines provided in CODING_STANDARD.md.
• n/a The feature or user visible behaviour I have added or modified has been documented in the User Guide in doc/cprover-manual/
• Regression or unit tests are included, or existing tests cover the modified code (in this case I have detailed which ones those are in the commit message).
• n/a My commit message includes data points confirming performance improvements (if claimed).
• My PR is restricted to a single feature or bugfix.
• n/a White-space or formatting changes outside the feature-related changed lines are in commits of their own.

[codecov]

Codecov Report

Merging #6686 (6a76ae2) into develop (1154f13) will increase coverage by 0.16%.
The diff coverage is 95.34%.

@@             Coverage Diff             @@
##           develop    #6686      +/-   ##
===========================================
+ Coverage    76.92%   77.09%   +0.16%     
===========================================
  Files         1583     1582       -1     
  Lines       183314   182647     -667     
===========================================
- Hits        141018   140813     -205     
+ Misses       42296    41834     -462     

Impacted Files	Coverage Δ
jbmc/src/jdiff/jdiff_parse_options.h	100.00% <ø> (ø)
src/analyses/goto_check_c.cpp	91.59% <ø> (-0.02%)	⬇️
jbmc/src/jdiff/jdiff_parse_options.cpp	67.34% <71.42%> (-0.74%)	⬇️
jbmc/src/janalyzer/janalyzer_parse_options.cpp	48.74% <100.00%> (-0.01%)	⬇️
jbmc/src/jbmc/jbmc_parse_options.cpp	75.97% <100.00%> (-0.06%)	⬇️
src/analyses/goto_check.cpp	81.39% <100.00%> (+17.75%)	⬆️
.../goto-instrument/goto_instrument_parse_options.cpp	69.39% <100.00%> (+0.03%)	⬆️
src/goto-programs/process_goto_program.cpp	100.00% <100.00%> (ø)

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