Non-portable file paths

[Puzzled-Face]

This is a sub-issue. See also #841.

Perhaps these files are temporary? Could they simply be deleted?

Found the following non-portable file paths:
  crmPack/vignettes/crmPack-jss-paper_cache/html/OneParExp-model-example_339dc3c612da97ca32ef5a87efc0f63a.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/OneParExp-model-example_339dc3c612da97ca32ef5a87efc0f63a.rdb
  crmPack/vignettes/crmPack-jss-paper_cache/html/OneParExp-model-example_339dc3c612da97ca32ef5a87efc0f63a.rdx
  crmPack/vignettes/crmPack-jss-paper_cache/html/classOneParExp-dose_prob_12659bc78c487089dbfdbfe1e7ff85dd.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/classOneParExp-dose_prob_12659bc78c487089dbfdbfe1e7ff85dd.rdb
  crmPack/vignettes/crmPack-jss-paper_cache/html/classOneParExp-dose_prob_12659bc78c487089dbfdbfe1e7ff85dd.rdx
  crmPack/vignettes/crmPack-jss-paper_cache/html/classOneParExp-init_527bdf64d783a418c1cb035e1dc9a679.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/classOneParExp-init_527bdf64d783a418c1cb035e1dc9a679.rdb
  crmPack/vignettes/crmPack-jss-paper_cache/html/classOneParExp-init_527bdf64d783a418c1cb035e1dc9a679.rdx
  crmPack/vignettes/crmPack-jss-paper_cache/html/doseRecommendation_4730acae2bb8e7aa1d0ed71e8e1bd1dd.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/doseRecommendation_4730acae2bb8e7aa1d0ed71e8e1bd1dd.rdb
  crmPack/vignettes/crmPack-jss-paper_cache/html/doseRecommendation_4730acae2bb8e7aa1d0ed71e8e1bd1dd.rdx
  crmPack/vignettes/crmPack-jss-paper_cache/html/newNextBest-def_06e74ef99a533205dd5edf08c3ab58b4.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/newNextBest-method_e2ea244dbbdea34fd8a954385fcd2c47.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/newNextBest-method_e2ea244dbbdea34fd8a954385fcd2c47.rdb
  crmPack/vignettes/crmPack-jss-paper_cache/html/newNextBest-method_e2ea244dbbdea34fd8a954385fcd2c47.rdx
  crmPack/vignettes/crmPack-jss-paper_cache/html/newNextBest-try_6fd048b969d641555cb8f29b552400cd.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/newdualstopping-rule_10b3946482c88235fe2bb5ce71d7dabf.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/newdualstopping-rule_10b3946482c88235fe2bb5ce71d7dabf.rdb
  crmPack/vignettes/crmPack-jss-paper_cache/html/newdualstopping-rule_10b3946482c88235fe2bb5ce71d7dabf.rdx
  crmPack/vignettes/crmPack-jss-paper_cache/html/nextBest-ncrm-def_c389c78fb3cda4189a0c99e37489d158.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/nextBest-ncrm-def_c389c78fb3cda4189a0c99e37489d158.rdb
  crmPack/vignettes/crmPack-jss-paper_cache/html/nextBest-ncrm-def_c389c78fb3cda4189a0c99e37489d158.rdx
  crmPack/vignettes/crmPack-jss-paper_cache/html/nextBest-ncrm-eval_4e72125736095de4fe2d1f6615384cb5.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/nextBest-ncrm-eval_4e72125736095de4fe2d1f6615384cb5.rdb
  crmPack/vignettes/crmPack-jss-paper_cache/html/nextBest-ncrm-eval_4e72125736095de4fe2d1f6615384cb5.rdx
  crmPack/vignettes/crmPack-jss-paper_cache/html/sim-summary-plot_3aff30c0eb825ce978dad370e904167c.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/stop-rules-eval_758cbaf55dfd673e52ebbb07833804cc.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/true-def-alternative_8c63f0de4ed8c6150472573d761959c8.RData
  crmPack/vignettes/crmPack-jss-paper_cache/html/true-def-alternative_8c63f0de4ed8c6150472573d761959c8.rdb
  crmPack/vignettes/crmPack-jss-paper_cache/html/true-def-alternative_8c63f0de4ed8c6150472573d761959c8.rdx

Tarballs are only required to store paths of up to 100 bytes and cannot
store those of more than 256 bytes, with restrictions including to 100
bytes for the final component.
See section 'Package structure' in the 'Writing R Extensions' manual.