depend: remove missing-lib warning suppresion rule for libshiboken

The global missing-lib warning suppression for libshiboken should now
be redundant, thanks to the improved missing-lib warning suppression
from the preceding commit.

PyInstaller/depend/dylib.py

@@ -347,10 +347,6 @@ def include_library(libname):
 
 # Patterns for suppressing warnings about missing dynamically linked libraries
 _warning_suppressions = [
-    # We fail to discover shiboken2 (PySide2) and shiboken6 (PySide6) shared libraries due to the way the packages set
-    # up the search path to the library, which is located in a separate package. Suppress the harmless warnings to avoid
-    # confusion.
-    r'(lib)?shiboken.*',
 ]
 
 # On some systems (e.g., openwrt), libc.so might point to ldd. Suppress warnings about it.