tests: samples: revert timeout change for FVP BaseR

Partially revert commit 0028e9733295316d152eba07bf56677d83f4b1b5.
Timeout for tests/posix/common must be still increased for slow
platforms (previously was 120 sec).

Signed-off-by: Manuel Arguelles <manuel.arguelles@nxp.com>
diff --git a/samples/subsys/rtio/sensor_batch_processing/sample.yaml b/samples/subsys/rtio/sensor_batch_processing/sample.yaml
index f9886ab..956af3a 100644
--- a/samples/subsys/rtio/sensor_batch_processing/sample.yaml
+++ b/samples/subsys/rtio/sensor_batch_processing/sample.yaml
@@ -5,7 +5,6 @@
     tags: rtio
     integration_platforms:
       - native_posix
-    timeout: 120
     harness: console
     harness_config:
       type: multi_line
diff --git a/tests/kernel/workq/critical/testcase.yaml b/tests/kernel/workq/critical/testcase.yaml
index 4fcce3d..fbd1055 100644
--- a/tests/kernel/workq/critical/testcase.yaml
+++ b/tests/kernel/workq/critical/testcase.yaml
@@ -1,6 +1,5 @@
 common:
   tags: kernel
-  timeout: 60
 
 tests:
   kernel.workqueue.critical:
diff --git a/tests/posix/common/testcase.yaml b/tests/posix/common/testcase.yaml
index 97cf8d6..7d84579 100644
--- a/tests/posix/common/testcase.yaml
+++ b/tests/posix/common/testcase.yaml
@@ -5,7 +5,7 @@
   platform_exclude: qemu_leon3
   tags: posix
   min_ram: 64
-  timeout: 600
+  timeout: 240
 
 tests:
   portability.posix.common: