Revert "Refactor build options for Windows on CI"

This reverts commit 00bc7f99a137153e49f21967546c028374cd1e31.

Change-Id: Ie5b6be9040795da7247ccb987e9fda5377178bc8
diff --git a/jenkins/build_defs/github-jobs.bat.tpl b/jenkins/build_defs/github-jobs.bat.tpl
index e6df26d..9ae9fa6 100644
--- a/jenkins/build_defs/github-jobs.bat.tpl
+++ b/jenkins/build_defs/github-jobs.bat.tpl
@@ -67,12 +67,12 @@
 
 :: Check variables.WINDOWS_BUILDS
 if not "{{ variables.WINDOWS_BUILDS }}" == "" (
-  call:bazel build --copt=-w --host_copt=-w {{ variables.WINDOWS_BUILDS }}
+  call:bazel build --copt=-w --cpu=x64_windows_msvc --host_copt=-w {{ variables.WINDOWS_BUILDS }}
 )
 
 :: Check variables.WINDOWS_TESTS
 if not "{{ variables.WINDOWS_TESTS }}" == "" (
-  call:bazel test --copt=-w --host_copt=-w {{ variables.WINDOWS_TESTS }}
+  call:bazel test --copt=-w --cpu=x64_windows_msvc --host_copt=-w {{ variables.WINDOWS_TESTS }}
 )
 
 set MSYS_OPTION=--cpu=x64_windows_msys --host_cpu=x64_windows_msys
diff --git a/jenkins/jobs/configs/bazel-tests.json b/jenkins/jobs/configs/bazel-tests.json
index 361273f..cce8206 100644
--- a/jenkins/jobs/configs/bazel-tests.json
+++ b/jenkins/jobs/configs/bazel-tests.json
@@ -99,7 +99,6 @@
             "variation": ""
         }],
         "parameters": {
-            "build_opts": ["--copt=-w", "--host_copt=-w"],
             "test_opts": ["-k", "--build_tests_only"],
             "tests": [
                 "//src/test/java/...",
@@ -122,7 +121,6 @@
             "variation": ""
         }],
         "parameters": {
-            "build_opts": ["--cpu=x64_windows_msys", "--host_cpu=x64_windows_msys"],
             "test_opts": ["-k", "--build_tests_only"],
             "tests": ["//src/tst/shell/bazel:bazel_windows_example_test"],
             "targets": []
diff --git a/jenkins/jobs/configs/bootstrap.json b/jenkins/jobs/configs/bootstrap.json
index 6953a46..586e77a 100644
--- a/jenkins/jobs/configs/bootstrap.json
+++ b/jenkins/jobs/configs/bootstrap.json
@@ -81,8 +81,8 @@
                 "bazel-bin/src/bazel": ["bazel.exe", "bazel-msvc-%{release_name}.exe"]
             },
             "opts": [
-                "--copt=-w",
-                "--host_copt=-w"
+                "--cpu=x64_windows_msvc",
+                "--copt=/w"
             ]
         }
     },