Revert "[Driver] Support for compressed debug info on Fuchsia"

This reverts commit 19190cc.

Causes test failures on following build bot:

http://lab.llvm.org:8011/#/builders/216

Author: Tom Weaver

clang/lib/Driver/ToolChains/Fuchsia.cpp

@@ -127,7 +127,6 @@ void fuchsia::Linker::ConstructJob(Compilation &C, const JobAction &JA,
                   D.getLTOMode() == LTOK_Thin);
   }
 
-  addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs);
   AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
 
   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,

clang/test/Driver/fuchsia.c

@@ -253,13 +253,6 @@
 // CHECK-THINLTO: "-plugin-opt=thinlto"
 // CHECK-THINLTO: "-plugin-opt=jobs=8"
 
-// RUN: %clang %s -### --target=x86_64-unknown-fuchsia \
-// RUN:     --sysroot=%S/platform \
-// RUN:     -Og -gz 2>&1 \
-// RUN:     | FileCheck %s -check-prefix=CHECK-GZ
-// CHECK-GZ: {{.*}}clang{{.*}}" "--compress-debug-sections=zlib"
-// CHECK-GZ: {{.*}}ld.lld{{.*}}" "--compress-debug-sections=zlib"
-
 // RUN: %clang %s -### --target=x86_64-unknown-fuchsia \
 // RUN:     -gsplit-dwarf -g -c %s 2>&1 \
 // RUN:     | FileCheck %s -check-prefix=CHECK-SPLIT-DWARF