[R] Remove version number which triggers CRAN warning

[thisisnic]

Describe the bug, including details regarding any error messages, version, and platform.

Email from CRAN:

the new arrow has

** using staged installation
Warning in .make_numeric_version(x, strict, .standard_regexps()$valid_numeric_version) :
invalid non-character version specification 'x' (type: double)
Calls: Ops.numeric_version ... as.numeric_version -> numeric_version -> .make_numeric_version
Calls:
1: Ops.numeric_version(dev_version, 100)

warning from

./tools/nixlibs.R:dev_version <- package_version(VERSION)[1, 4]
./tools/nixlibs.R:if (is.na(dev_version) || dev_version < 100) {

which should have "100" instead: can you pls fix?

Component(s)

R