sys-devel/gcc: Disable go modules.

ChromeOS reference CL:
https://chromium.googlesource.com/chromiumos/overlays/chromiumos-overlay/+/7a3b4d6c5d39502f568d96046da9262a0c7368fe%5E%21/#F1

BUG=b/254691844
TEST=presubmit
RELEASE_NOTE=None

Change-Id: Iefdd6b21344decbf8863ae9d10a4d07514fcc375
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/38788
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>
diff --git a/sys-devel/gcc/gcc-10.2.0-r25.ebuild b/sys-devel/gcc/gcc-10.2.0-r26.ebuild
similarity index 100%
rename from sys-devel/gcc/gcc-10.2.0-r25.ebuild
rename to sys-devel/gcc/gcc-10.2.0-r26.ebuild
diff --git a/sys-devel/gcc/gcc-10.2.0.ebuild b/sys-devel/gcc/gcc-10.2.0.ebuild
index 78ac170..80f39bc 100644
--- a/sys-devel/gcc/gcc-10.2.0.ebuild
+++ b/sys-devel/gcc/gcc-10.2.0.ebuild
@@ -391,7 +391,7 @@
 			local ccache_suffix="${ccache_suffixes[${ccache_index}]}"
 			local ccache_option="${ccache_option_values[${ccache_index}]}"
 			# Build new golang wrapper
-			"${FILESDIR}/compiler_wrapper/build.py" --config="${sysroot_wrapper_config}" \
+			GO111MODULE=off "${FILESDIR}/compiler_wrapper/build.py" --config="${sysroot_wrapper_config}" \
 				--use_ccache="${ccache_option}" \
 				--use_llvm_next="${use_llvm_next}" \
 				--output_file="${D}${BINPATH}/${sysroot_wrapper_file_prefix}.${ccache_suffix}" || die
@@ -418,7 +418,7 @@
 
 		exeinto "${BINPATH}"
 
-		"${FILESDIR}/compiler_wrapper/build.py" --config=cros.host --use_ccache=false \
+		GO111MODULE=off "${FILESDIR}/compiler_wrapper/build.py" --config=cros.host --use_ccache=false \
 			--use_llvm_next="${use_llvm_next}" \
 			--output_file="${D}${BINPATH}/${sysroot_wrapper_file}" || die