[code-reflection] Integrated: Previous PR was generating extras spaces and unused expression wanings

[Gary Frost]

Onl Nvidia OpenCl and CUDA compiler was complaining about unused expressions. 

These were the var remnant converting `kc.gix` to HAT_GIS.. We were leaving the var reference in the code model. 

I also removed some unnecessary spaces.

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Commit messages:
 - Previous PR was generating extras spaces and some unused expression warning nvidia only

Changes: https://git.openjdk.org/babylon/pull/797/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=797&range=00
  Stats: 56 lines in 4 files changed: 23 ins; 0 del; 33 mod
  Patch: https://git.openjdk.org/babylon/pull/797.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/797/head:pull/797

PR: https://git.openjdk.org/babylon/pull/797