Don't start a new process to delete a file

Bug: 119076203
Test: build and run locally
Change-Id: Ice5cf85e2d002943cfb2b938f28bfec67e833df7
diff --git a/host/commands/launch/main.cc b/host/commands/launch/main.cc
index 3b685f1..a33127a 100644
--- a/host/commands/launch/main.cc
+++ b/host/commands/launch/main.cc
@@ -213,7 +213,7 @@
 
 void RemoveFile(const std::string& file) {
   LOG(INFO) << "Removing " << file;
-  cvd::execute({"/bin/rm", "-f", file});
+  remove(file.c_str());
 }
 
 bool ApplyDataImagePolicy(const char* data_image) {