Remove wrong javadoc throws

[akurtakov]

The method is not throwing IOException at all.

[akurtakov]

Fixes warning in I-build https://download.eclipse.org/eclipse/downloads/drops4/I20240512-1800/compilelogs/plugins/org.eclipse.equinox.weaving.caching_1.3.100.v20240321-1445/@dot.html#OTHER_WARNINGS

[github-actions[bot]]

Test Results

  660 files  ±0    660 suites  ±0   1h 11m 22s :stopwatch: +11s 2 195 tests ±0  2 148 :white_check_mark: ±0   47 :zzz: ±0  0 :x: ±0  6 729 runs  ±0  6 586 :white_check_mark: ±0  143 :zzz: ±0  0 :x: ±0 

Results for commit 945d3fa1. ± Comparison against base commit 99a85789.