Simplify change by bypassing temporaroy string 'x_str'.

Author: cmtice

compiler-rt/test/fuzzer/focus-function.test

@@ -21,9 +21,9 @@ FOCUS_F0: INFO: 0/1 inputs touch the focus function
 RUN: rm -rf %t-corpus
 RUN: mkdir %t-corpus
 # ABC triggers the focus function, others don't.
-RUN: %python -c 'x_str = "ABC" + "x" * 2048; print(x_str)' > %t-corpus/ABC
-RUN: %python -c 'x_str = "AXY" + "x" * 2048; print(x_str)' > %t-corpus/AXY
-RUN: %python -c 'x_str = "ABX" + "x" * 2048; print(x_str)' > %t-corpus/ABX
+RUN: %python -c 'print("ABC" + "x" * 2048)' > %t-corpus/ABC
+RUN: %python -c 'print("AXY" + "x" * 2048)' > %t-corpus/AXY
+RUN: %python -c 'print("ABX" + "x" * 2048)' > %t-corpus/ABX
 
 RUN: %run %t-exe -runs=10000 -focus_function=f0 %t-corpus 2>&1 | FileCheck %s --check-prefix=CORPUS_1_3
 CORPUS_1_3: INFO: 1/3 inputs touch the focus function