RFR: 8240264: iOS: Unnecessary logging on every pulse when GL context changes [v3]

[Jose Pereda]

> This PR comments out too verbose console logging, as it has been done with some other fprintf calls.
> As a follow up of this PR, a custom directive that enables this output if needed can be considered.

Jose Pereda has updated the pull request incrementally with one additional commit since the last revision:

  Restore initial printout

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Changes:
  - all: https://git.openjdk.java.net/jfx/pull/165/files
  - new: https://git.openjdk.java.net/jfx/pull/165/files/34d256da..35173e64

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/165/webrev.02
 - incr: https://webrevs.openjdk.java.net/jfx/165/webrev.01-02

  Stats: 3 lines in 1 file changed: 0 ins; 2 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/165.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/165/head:pull/165

PR: https://git.openjdk.java.net/jfx/pull/165