Revert of Turned on SkSL->GLSL compiler (patchset #48 id:1220001 of https://codereview.chromium.org/2288033003/ )

Reason for revert:
https://build.chromium.org/p/chromium/builders/Linux%20x64/builds/26798

Original issue's description:
> Turned on SkSL->GLSL compiler
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2288033003
>
> Committed: https://skia.googlesource.com/skia/+/9b0fe3d125f237d9884732a48414fa85fc71b4e3
> Committed: https://skia.googlesource.com/skia/+/b12b3c6908c62c908b3680be01e3b5bfd30de310
> Committed: https://skia.googlesource.com/skia/+/f008b0a59f45c0d4bea3e66faf3b01805009ec89
> Committed: https://skia.googlesource.com/skia/+/08b2ccf398e2b81bc05d2c105837e5419899469b
> Committed: https://skia.googlesource.com/skia/+/dcfe6dba4a335e50e86ff68e3252065d4197432c

TBR=benjaminwagner@google.com,bsalomon@google.com,egdaniel@google.com,ethannicholas@google.com
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review-Url: https://codereview.chromium.org/2408053002

1 files changed, 0 insertions, 35 deletions

diff --git a/src/sksl/README b/src/sksl/README
deleted file mode 100644
index 1427c21926..0000000000
--- a/src/sksl/README
+++ /dev/null
@@ -1,35 +0,0 @@
-Overview
-========
-
-SkSL ("Skia Shading Language") is a variant of GLSL which is used as Skia's 
-internal shading language. SkSL is, at its heart, a single standardized version
-of GLSL which avoids all of the various version and dialect differences found
-in GLSL "in the wild", but it does bring a few of its own changes to the table.
-
-Skia uses the SkSL compiler to convert SkSL code to GLSL, GLSL ES, or SPIR-V
-before handing it over to the graphics driver.
-
-Differences from GLSL
-=====================
-
-SkSL is based on GLSL 4.5. For the most part, write SkSL exactly as you would
-desktop GLSL, and the SkSL compiler will take care of version and dialect
-differences (for instance, you always use "in" and "out", and skslc will handle
-translating them to "varying" and "attribute" as appropriate). Be aware of the 
-following differences between SkSL and GLSL:
-
-* no #version or "precision" statement is required, and they will be ignored if
-  present
-* the output color is sk_FragColor (do not declare it)
-* lowp, mediump, and highp are always permitted (but will only be respected if 
-  you run on a GLES device)
-* you do not need to include ".0" to make a number a float (meaning that
-  "vec2(x, y) * 4" is perfectly legal in SkSL, unlike GLSL where it would often
-  have to be expressed "vec2(x, y) * 4.0". There is no performance penalty for 
-  this, as the number is converted to a float at compile time)
-* type suffixes on numbers (1.0f, 0xFFu) are both unnecessary and unsupported
-* some built-in functions and one or two rarely-used language features are not
-  yet supported (sorry!)
-
-SkSL is still under development, and is expected to diverge further from GLSL
-over time.