sm8450-common: Drop proprietary libdrmutils

Change-Id: Ibfcf6e589207af62f3ce77c435713c27dbed5c1c

proprietary-files.txt

@@ -401,7 +401,6 @@ vendor/lib/libQSEEComAPI.so
 vendor/lib/libcpion.so
 vendor/lib/libdrmfs.so
 vendor/lib/libdrmtime.so
-vendor/lib/libdrmutils.so
 vendor/lib/libops.so
 vendor/lib/libqisl.so
 vendor/lib/librpmb.so
@@ -415,7 +414,6 @@ vendor/lib64/libQSEEComAPI.so
 vendor/lib64/libcpion.so
 vendor/lib64/libdrmfs.so
 vendor/lib64/libdrmtime.so
-vendor/lib64/libdrmutils.so
 vendor/lib64/libops.so
 vendor/lib64/libqisl.so
 vendor/lib64/librpmb.so