Merge pull request #23109 from seanm:misc-warnings

* Fixed clang -Wnewline-eof warnings
* Fixed all trivial clang -Wextra-semi and -Wc++98-compat-extra-semi warnings
* Removed trailing semi from various macros
* Fixed various -Wunused-macros warnings
* Fixed some trivial -Wdocumentation warnings
* Fixed some -Wdocumentation-deprecated-sync warnings
* Fixed incorrect indentation
* Suppressed some clang warnings in 3rd party code
* Fixed QRCodeEncoder::Params documentation.

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Co-authored-by: Alexander Smorkalov <alexander.smorkalov@xperience.ai>

modules/dnn/src/layers/convolution_layer.cpp

@@ -242,8 +242,6 @@ public:
 };
 
 
-#define IS_POWER_LAYER(layer) \
-            (!layer.empty() && !layer->type.compare("Power"))
 //TODO: simultaneously convolution and bias addition for cache optimization
 class ConvolutionLayerImpl CV_FINAL : public BaseConvolutionLayerImpl
 {