Revert "moved SkSL FloatLiteral data into IRNode"

This reverts commit 135e2376563205533c4638a4ef15816b4eb022c1.

No-Tree-Checks: true
Change-Id: I7e9dd2148f7b2a8dee1e49a9a9cc593e0d7ceb6e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/321460
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
17 files changed