Revert "Switch to tracing JIT by default"

This reverts commit 10b0957.

This seems to cause many test failures:

Test === operator : different types [tests/lang/operators/operator_identical_basic.phpt]
Test <=> operator : different types [tests/lang/operators/operator_spaceship_basic.phpt]
comparing different variables for equality [Zend/tests/compare_001_64bit.phpt]
comparing different variables for identity [Zend/tests/compare_002_64bit.phpt]
Rebinding of ::getClosure()s [Zend/tests/closure_061.phpt]
comparing different variables (greater than) [Zend/tests/compare_003_64bit.phpt]
comparing different variables (less than) [Zend/tests/compare_004_64bit.phpt]
comparing different variables (greater or equal than) [Zend/tests/compare_005_64bit.phpt]
comparing different variables (smaller or equal than) [Zend/tests/compare_006_64bit.phpt]
Invalid numeric string E_WARNINGs and E_NOTICEs, combined assignment operations [Zend/tests/numeric_string_errors_assign.phpt]
Bug #51819 (Case discrepancy in timezone names cause Uncaught exception and fatal error) [ext/date/tests/bug51819.phpt]
Test all filters returned by filter_list() [ext/filter/tests/033.phpt]
filter_var() and FILTER_VALIDATE_MAC [ext/filter/tests/055.phpt]
Test strrpos() function : usage variations - unexpected inputs for 'needle' argument [ext/standard/tests/strings/strrpos_variation10.phpt]
Test strtr() function : usage variations - empty string & null for 'str' argument [ext/standard/tests/strings/strtr_variation4.phpt]
Test strtr() function : usage variations - unexpected inputs for 'from' argument [ext/standard/tests/strings/strtr_variation6.phpt]
Test strstr() function [ext/standard/tests/strings/strstr.phpt]

ext/opcache/jit/zend_jit.h

@@ -37,7 +37,7 @@
 #define ZEND_JIT_REG_ALLOC_GLOBAL (1<<1) /* global linear scan register allocation */
 #define ZEND_JIT_CPU_AVX          (1<<2) /* use AVX instructions, if available */
 
-#define ZEND_JIT_DEFAULT_OPTIONS      "1254"
+#define ZEND_JIT_DEFAULT_OPTIONS      "1205"
 #define ZEND_JIT_DEFAULT_BUFFER_SIZE  "0"
 
 #define ZEND_JIT_COUNTER_INIT         32531