Merge pull request ARMmbed#14447 from LDong-Arm/no_tfm_ignore

Remove paths to fetched TF-M repos from .gitignore

Author: adbridge

.gitignore

@@ -98,10 +98,6 @@ test_suite.json
 # default delivery dir
 DELIVERY/
 
-# Directory used to clone and build TF-M
-platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_TFM/TARGET_TFM_V1_0/TARGET_IGNORE/
-platform/FEATURE_EXPERIMENTAL_API/FEATURE_PSA/TARGET_TFM/TARGET_TFM_LATEST/TARGET_IGNORE/
-
 # CMake
 CMakeCache.txt
 cmake_install.cmake