Remove extra parens around static field references

[athos]

A recent update on clj-kondo has introduced a new linter java-static-field-call, which checks if a reference to a Java static field has extra parens around it, and now it is enabled by default and will be reported as errors.

I found some portion of cljam code caught by the linter. This PR fixes it all.

$ clj-kondo --lint src:test | grep error
src/cljam/io/wig.clj:92:31: error: Expected: throwable, received: string.
test/cljam/io/bam_test.clj:46:10: error: Static fields should be referenced without parens unless they are intended as function calls
test/cljam/io/bam_test.clj:47:10: error: Static fields should be referenced without parens unless they are intended as function calls
test/cljam/io/bam_test.clj:48:10: error: Static fields should be referenced without parens unless they are intended as function calls
test/cljam/io/bam_test.clj:49:10: error: Static fields should be referenced without parens unless they are intended as function calls
test/cljam/io/bam_test.clj:50:10: error: Static fields should be referenced without parens unless they are intended as function calls
test/cljam/io/gff_test.clj:319:70: error: Unresolved symbol: ?str
linting took 2004ms, errors: 7, warnings: 3
$

[alumi]

Thank you for the fixes! LGTM 👍

[r6eve]

LGTM!